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db_tunables.h
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/*
Copyright 2017, 2021, Bloomberg Finance L.P.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef _DB_TUNABLES_H
#define _DB_TUNABLES_H
#include <sc_version.h>
#define STR(x) #x
/*
We need this guard to avoid accidental inclusion of this file
at multiple places.
*/
REGISTER_TUNABLE("abort_on_in_use_rqid", NULL, TUNABLE_BOOLEAN,
&gbl_abort_on_clear_inuse_rqid, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("accept_osql_mismatch", NULL, TUNABLE_BOOLEAN,
&gbl_reject_osql_mismatch, READONLY | INVERSE_VALUE | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_lua_print", "Enable to allow stored "
"procedures to print trace on "
"DB's stdout. (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_lua_print, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("allow_anon_id_for_spmux",
"Allow anonymous identities over connections routed from the secure pmux port", TUNABLE_INTEGER,
&gbl_allow_anon_id_for_spmux, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_lua_dynamic_libs",
"Enable to allow use of dynamic "
"libraries (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_lua_dynamic_libs, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_pragma",
"Enable to allow use of the PRAGMA command (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_pragma,
NOARG | EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_negative_column_size",
"Allow negative column size in csc2 schema. Added mostly for "
"backwards compatibility. (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_neg_column_size, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_portmux_route", NULL, TUNABLE_BOOLEAN,
&gbl_pmux_route_enabled, READONLY | NOARG | READEARLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("allow_user_schema",
"Enable to allow per-user schemas. (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_user_schema, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("analyze_comp_threads",
"Number of thread to use when generating samples for "
"computing index statistics. (Default: 10)",
TUNABLE_INTEGER, &analyze_max_comp_threads, READONLY, NULL,
NULL, analyze_set_max_sampling_threads, NULL);
REGISTER_TUNABLE("analyze_comp_threshold",
"Index file size above which we'll do sampling, rather than "
"scan the entire index. (Default: 104857600)",
TUNABLE_INTEGER, &sampling_threshold, READONLY, NULL, NULL,
analyze_set_sampling_threshold, NULL);
REGISTER_TUNABLE("analyze_tbl_threads",
"Number of threads to go through generated samples when "
"generating index statistics. (Default: 5)",
TUNABLE_INTEGER, &analyze_max_table_threads, READONLY, NULL,
NULL, analyze_set_max_table_threads, NULL);
REGISTER_TUNABLE("always_reload_analyze", "Reload analyze data on every query. (Default: off)", TUNABLE_BOOLEAN,
&gbl_always_reload_analyze, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("archive_on_init",
"Archive files with database extensions in the database directory "
"at the time of init. (Default: ON)",
TUNABLE_BOOLEAN, &gbl_archive_on_init, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("badwrite_intvl", NULL, TUNABLE_INTEGER,
&gbl_test_badwrite_intvl, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("bbenv", NULL, TUNABLE_BOOLEAN, &gbl_bbenv,
DEPRECATED_TUNABLE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("blob_mem_mb", "Blob allocator: Sets the max "
"memory limit to allow for blob "
"values (in MB). (Default: 0)",
TUNABLE_INTEGER, &gbl_blobmem_cap, READONLY, NULL, NULL,
blob_mem_mb_update, NULL);
REGISTER_TUNABLE("blobmem_sz_thresh_kb",
"Sets the threshold (in KB) above which blobs are allocated "
"by the blob allocator. (Default: 0)",
TUNABLE_INTEGER, &gbl_blob_sz_thresh_bytes, READONLY, NULL,
NULL, blobmem_sz_thresh_kb_update, NULL);
REGISTER_TUNABLE("blobstripe", NULL, TUNABLE_BOOLEAN, &gbl_blobstripe,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("broken_max_rec_sz", NULL, TUNABLE_INTEGER,
&gbl_broken_max_rec_sz, READONLY, NULL, NULL,
broken_max_rec_sz_update, NULL);
REGISTER_TUNABLE("broken_num_parser", NULL, TUNABLE_BOOLEAN,
&gbl_broken_num_parser, READONLY | NOARG | READEARLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("buffers_per_context", NULL, TUNABLE_INTEGER,
&gbl_buffers_per_context, READONLY | NOZERO, NULL, NULL, NULL,
NULL);
/*
REGISTER_TUNABLE("cache",
"Database cache size (in kb) . (Default: 64mb)",
TUNABLE_INTEGER, &db->cacheszkb, READONLY, NULL, NULL, NULL,
NULL);
*/
REGISTER_TUNABLE("cachekb", NULL, TUNABLE_INTEGER, &db->cacheszkb, READONLY,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("cachekbmax", NULL, TUNABLE_INTEGER, &db->cacheszkbmax,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("cachekbmin", NULL, TUNABLE_INTEGER, &db->cacheszkbmin,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("checkctags", NULL, TUNABLE_ENUM, &gbl_check_client_tags,
READONLY, checkctags_value, NULL, checkctags_update, NULL);
REGISTER_TUNABLE("check_constraint_feature", "Enables support for CHECK CONSTRAINTs (Default: ON)",
TUNABLE_BOOLEAN, &gbl_check_constraint_feature, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("chkpoint_alarm_time",
"Warn if checkpoints are taking more than this many seconds. "
"(Default: 60 secs)",
TUNABLE_INTEGER, &gbl_chkpoint_alarm_time, READONLY, NULL,
NULL, NULL, NULL);
/* Generate the value of 'cluster' on fly (define value()). */
/*
REGISTER_TUNABLE("cluster",
"List of nodes that comprise the cluster for this database.",
TUNABLE_STRING, &placeholder, READONLY, NULL, NULL, NULL,
NULL);
*/
REGISTER_TUNABLE("compress_page_compact_log", NULL, TUNABLE_BOOLEAN,
&gbl_compress_page_compact_log, READONLY | NOARG, NULL, NULL,
NULL, NULL);
/* NOTE: THIS OPTION IS CURRENTLY IGNORED */
REGISTER_TUNABLE("convflush", NULL, TUNABLE_INTEGER, &gbl_conv_flush_freq,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("crc32c",
"Use crc32c (alternate faster implementation of CRC32, "
"different checksums) for page checksums. (Default: on)",
TUNABLE_BOOLEAN, &gbl_crc32c, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("create_dba_user",
"Automatically create 'dba' user if it does not exist already "
"(Default: on)",
TUNABLE_BOOLEAN, &gbl_create_dba_user, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("create_default_user",
"Automatically create 'default' user when authentication is "
"enabled. (Default: off)",
TUNABLE_BOOLEAN, &gbl_create_default_user, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("crypto", NULL, TUNABLE_STRING, &gbl_crypto, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("ctrace_dbdir",
"If set, debug trace files will go to the data directory "
"instead of `$COMDB2_ROOT/var/log/cdb2/). (Default: off)",
TUNABLE_BOOLEAN, &gbl_ctrace_dbdir, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("ctrace_gzip", NULL, TUNABLE_INTEGER, &ctrace_gzip,
DEPRECATED_TUNABLE | READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE(
"ddl_cascade_drop",
"On DROP, also drop the dependent keys/constraints. (Default: 1)",
TUNABLE_BOOLEAN, &gbl_ddl_cascade_drop, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("deadlock_policy_override", NULL, TUNABLE_INTEGER,
&gbl_deadlock_policy_override, READONLY, NULL, NULL,
deadlock_policy_override_update, NULL);
/*
REGISTER_TUNABLE("decimal_rounding", NULL, TUNABLE_INTEGER,
&gbl_decimal_rounding, READONLY, NULL, NULL, NULL, NULL);
*/
/*
REGISTER_TUNABLE("default_datetime_precision", NULL,
TUNABLE_INTEGER, &gbl_datetime_precision, READONLY, NULL, NULL,
NULL, NULL);
*/
REGISTER_TUNABLE("default_function_feature", "Enables support for SQL function as default value in column definitions (Default: ON)",
TUNABLE_BOOLEAN, &gbl_default_function_feature, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("verify_default_function", "Verify default function at schema-change. (Default: on)", TUNABLE_BOOLEAN,
&gbl_verify_default_function, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dir",
"Database directory. (Default: $COMDB2_ROOT/var/cdb2/$DBNAME)",
TUNABLE_STRING, &db->basedir, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("disable_sql_table_replacement",
"Disables SQL table replacement",
TUNABLE_BOOLEAN, &gbl_disable_sql_table_replacement,
0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_cache_internal_nodes",
"Disables 'enable_cache_internal_nodes'. B-tree leaf nodes "
"are treated same as internal nodes.",
TUNABLE_BOOLEAN, &gbl_enable_cache_internal_nodes,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_datetime_ms_us_sc",
"Disables 'enable_datetime_ms_us_sc'", TUNABLE_BOOLEAN,
&gbl_forbid_datetime_ms_us_s2s, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_datetime_promotion",
"Disables 'enable_datetime_promotion'", TUNABLE_BOOLEAN,
&gbl_forbid_datetime_promotion, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_datetime_truncation",
"Disables 'enable_datetime_truncation'", TUNABLE_BOOLEAN,
&gbl_forbid_datetime_truncation, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_inplace_blob_optimization",
"Disables 'enable_inplace_blob_optimization'", TUNABLE_BOOLEAN,
&gbl_inplace_blob_optimization,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_inplace_blobs", "Disables 'enable_inplace_blobs'",
TUNABLE_BOOLEAN, &gbl_inplace_blobs,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_lowpri_snapisol", "Disables 'enable_lowpri_snapisol'",
TUNABLE_BOOLEAN, &gbl_lowpri_snapisol_sessions,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
/*
REGISTER_TUNABLE("disable_new_snapshot",
"Disables 'enable_new_snapshot'", TUNABLE_BOOLEAN,
&gbl_new_snapisol, INVERSE_VALUE | READONLY | NOARG, NULL,
NULL, NULL, NULL);
*/
REGISTER_TUNABLE("disable_osql_blob_optimization",
"Disables 'enable_osql_blob_optimization'", TUNABLE_BOOLEAN,
&gbl_osql_blob_optimization, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_overflow_page_trace",
"Disables 'enable_overflow_page_trace'", TUNABLE_BOOLEAN,
&gbl_disable_overflow_page_trace, NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("disable_page_compact", "Sets 'page_compact_thresh_ff' to 0.",
TUNABLE_BOOLEAN, &gbl_pg_compact_thresh,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_page_compact_backward_scan",
"Disables 'enable_page_compact_backward_scan'",
TUNABLE_BOOLEAN, &gbl_disable_backward_scan, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_page_latches", "Disables 'page_latches'",
TUNABLE_BOOLEAN, &gbl_page_latches,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_partial_indexes", "Disables 'enable_partial_indexes'",
TUNABLE_BOOLEAN, &gbl_partial_indexes,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("force_writesql", "Force admin mode to for write sql. (Default: on)", TUNABLE_BOOLEAN,
&gbl_force_writesql, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("logmsg.epochms", "Show epochms in log-messages. (Default: off)", TUNABLE_BOOLEAN,
&gbl_logmsg_epochms, READONLY | NOARG, NULL, NULL, NULL, NULL);
/* User-level 2pc tunables */
REGISTER_TUNABLE("enable_2pc", "Enable 2pc fdb transactions. (Default: off)", TUNABLE_BOOLEAN, &gbl_2pc,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_coordinator",
"Set of dbname/tiers which can act as coordinator for this participant. (Default: none)",
TUNABLE_STRING, &gbl_allowed_coordinators, READONLY, NULL, NULL, disttxn_allow_coordinator_set, NULL);
REGISTER_TUNABLE("disttxn_async_messages", "Send disttxn messages asynchronously. (Default: on)", TUNABLE_BOOLEAN,
&gbl_disttxn_async_messages, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("coordinator_wait_propagate", "Coordinator waits for participants to propagate. (Default: on)",
TUNABLE_BOOLEAN, &gbl_coordinator_wait_propagate, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("coordinator_sync_on_commit", "Coordinator syncs log and waits on commit. (Default: on)",
TUNABLE_BOOLEAN, &gbl_coordinator_sync_on_commit, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("coordinator_block_until_durable", "Coordinator blocks until its commit is durable. (Default: on)",
TUNABLE_BOOLEAN, &gbl_coordinator_block_until_durable, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disttxn_random_retry_poll", "Poll up to this many ms on dist-retry. (Default: 500)", TUNABLE_INTEGER,
&gbl_disttxn_random_retry_poll, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disttxn_handle_cache", "Enable the disttxn handle-cache. (Default: on)", TUNABLE_BOOLEAN,
&gbl_disttxn_handle_cache, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disttxn_handle_linger_time", "Time that unused handles persist. (Default: 60s)", TUNABLE_INTEGER,
&gbl_disttxn_handle_linger_time, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("flush_on_prepare", "Flush master log on prepare. (Default: on)", TUNABLE_BOOLEAN,
&gbl_flush_on_prepare, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("flush_replicant_on_prepare", "Flush replicant log on prepare. (Default: on)", TUNABLE_BOOLEAN,
&gbl_flush_replicant_on_prepare, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("wait_for_prepare_seqnum", "Wait-for-seqnum for prepare records. (Default: on)", TUNABLE_BOOLEAN,
&gbl_wait_for_prepare_seqnum, 0, NULL, NULL, NULL, NULL);
/* 2pc debug & test tunables */
REGISTER_TUNABLE("debug_disttxn_trace", "Print disttxn debug information. (Default: off)", TUNABLE_BOOLEAN,
&gbl_debug_disttxn_trace, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("all_waitdie", "Enable waitdie for all transactions. (Default: off)", TUNABLE_BOOLEAN,
&gbl_all_waitdie, READONLY | EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_disable_waitdie_deadlock_detection", "Disable waitdie deadlock detection. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_disable_waitdie_deadlock_detection, EXPERIMENTAL | INTERNAL, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("debug_exit_participant_after_prepare", "Participant exits after successful prepare. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_exit_participant_after_prepare, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("debug_exit_coordinator_before_commit", "Coordinator exits before committing. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_exit_coordinator_before_commit, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("debug_exit_coordinator_after_commit", "Coordinator exits after committing. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_exit_coordinator_after_commit, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("debug_sleep_coordinator_before_commit", "Coordinator sleeps before committing. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_sleep_coordinator_before_commit, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("debug_coordinator_dispatch_failure", "Fake failed dispatch in coordinator. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_coordinator_dispatch_failure, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("debug_sleep_on_set_read_only", "Sleep before setting to readonly. (Default: off)", TUNABLE_BOOLEAN,
&gbl_debug_sleep_on_set_read_only, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_wait_on_verify_off", "Wait for particpant when verify is disabled. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_wait_on_verify_off, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_random_prepare", "Prepare randomly. (Default: off)", TUNABLE_BOOLEAN,
&gbl_random_prepare_commit, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_all_prepare_commit", "Prepare all transactions. (Default: off)", TUNABLE_BOOLEAN,
&gbl_all_prepare_commit, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_all_prepare_abort", "Prepare and abort all transactions. (Default: off)", TUNABLE_BOOLEAN,
&gbl_all_prepare_abort, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_all_prepare_leak", "Prepare and leak all transactions. (Default: off)", TUNABLE_BOOLEAN,
&gbl_all_prepare_leak, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("sleep_before_dispatch", "Sleep before dispatching on master. (Default: 0)", TUNABLE_INTEGER,
&gbl_debug_sleep_before_dispatch, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_sleep_before_prepare", "Sleep for 5 seconds before preparing. (Default: off)", TUNABLE_BOOLEAN,
&gbl_debug_sleep_before_prepare, EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_prefault_udp", "Disables 'enable_prefault_udp'", TUNABLE_BOOLEAN, &gbl_prefault_udp,
INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_replicant_latches", "Disables 'replicant_latches'", TUNABLE_BOOLEAN, &gbl_replicant_latches,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_rowlock_locking", NULL, TUNABLE_BOOLEAN, &gbl_disable_rowlocks, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("stack_at_page_read", "Stores stack-id for every page-read. (Default: off)", TUNABLE_BOOLEAN,
&gbl_stack_at_page_read, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("stack_at_page_write", "Stores stack-id for every page-write. (Default: off)", TUNABLE_BOOLEAN,
&gbl_stack_at_page_write, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("stack_at_lock_get", "Stores stack-id for every lock-get. (Default: off)", TUNABLE_BOOLEAN,
&gbl_stack_at_lock_get, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("stack_at_lock_handle", "Stores stack-id for every lock-handle. (Default: off)", TUNABLE_BOOLEAN,
&gbl_stack_at_lock_handle, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("stack_at_write_lock", "Stores stack-id for every write-lock. (Default: off)", TUNABLE_BOOLEAN,
&gbl_stack_at_write_lock, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("stack_at_lock_gen_increment", "Stores stack-id when lock's generation increments. (Default: off)",
TUNABLE_BOOLEAN, &gbl_stack_at_lock_gen_increment, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_seekscan_optimization", "Disables SEEKSCAN optimization", TUNABLE_BOOLEAN,
&gbl_disable_seekscan_optimization, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_skip_rows", NULL, TUNABLE_BOOLEAN, &gbl_disable_skip_rows, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("disable_sql_dlmalloc",
"If set, will use default system malloc for SQL state "
"machines. By default, each thread running SQL gets a "
"dedicated memory pool. (Default: off)",
TUNABLE_BOOLEAN, &gbl_disable_sql_dlmalloc, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_tagged_api", "Disables 'enable_tagged_api'",
TUNABLE_BOOLEAN, &gbl_disable_tagged_api, NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_tagged_api_writes", "Disables tag api writes",
TUNABLE_BOOLEAN, &gbl_disable_tagged_api_writes, NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_temptable_pool", "Sets 'temptable_limit' to 0.",
TUNABLE_BOOLEAN, &gbl_temptable_pool_capacity,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disable_upgrade_ahead", "Sets 'enable_upgrade_ahead' to 0.",
TUNABLE_BOOLEAN, &gbl_num_record_upgrades,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disallow_portmux_route", "Disables 'allow_portmux_route'",
TUNABLE_BOOLEAN, &gbl_pmux_route_enabled,
INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("abort_on_unfound_txn", "Abort if we cannot find a txn for a thread. (Default: on)",
TUNABLE_BOOLEAN, &gbl_abort_on_unfound_txn, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_abort_on_in_use_rqid", "Disable 'abort_on_in_use_rqid'",
TUNABLE_BOOLEAN, &gbl_abort_on_clear_inuse_rqid,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_forbid_ulonglong", "Disables 'forbid_ulonglong'",
TUNABLE_BOOLEAN, &gbl_forbid_ulonglong,
INVERSE_VALUE | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_init_with_inplace_updates",
"Disables 'init_with_inplace_updates'", TUNABLE_BOOLEAN,
&gbl_init_with_ipu, INVERSE_VALUE | READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("dont_init_with_instant_schema_change",
"Disables 'instant_schema_change'", TUNABLE_BOOLEAN,
&gbl_init_with_instant_sc, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_init_with_ondisk_header",
"Disables 'init_with_ondisk_header'", TUNABLE_BOOLEAN,
&gbl_init_with_odh, INVERSE_VALUE | READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("dont_init_queue_with_persistent_sequence",
"Disables 'init_queue_with_persistent_sequence'",
TUNABLE_BOOLEAN, &gbl_init_with_queue_persistent_seq,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_init_with_queue_persistent_sequence",
"Disables 'dont_init_with_queue_ondisk_header'",
TUNABLE_BOOLEAN, &gbl_init_with_queue_persistent_seq,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_optimize_repdb_truncate",
"Disable 'optimize_repdb_truncate'", TUNABLE_BOOLEAN,
&gbl_optimize_truncate_repdb,
INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("dont_prefix_foreign_keys", "Disables 'prefix_foreign_keys'",
TUNABLE_BOOLEAN, &gbl_fk_allow_prefix_keys,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_superset_foreign_keys",
"Disables 'superset_foreign_keys'", TUNABLE_BOOLEAN,
&gbl_fk_allow_superset_keys, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_sort_nulls_with_header",
"Disables 'sort_nulls_with_header'", TUNABLE_BOOLEAN,
&gbl_sort_nulls_correctly, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dtastripe", NULL, TUNABLE_INTEGER, &gbl_dtastripe,
READONLY | NOZERO, NULL, dtastripe_verify, NULL, NULL);
REGISTER_TUNABLE("early",
"When set, replicants will ack a transaction as soon as they "
"acquire locks - note that replication must succeed at that "
"point, and reads on that node will either see the records or "
"block. (Default: on)",
TUNABLE_BOOLEAN, &gbl_early, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_berkdb_retry_deadlock_bias", NULL, TUNABLE_BOOLEAN,
&gbl_enable_berkdb_retry_deadlock_bias, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE(
"enable_cache_internal_nodes",
"B-tree internal nodes have a higher cache priority. (Default: on)",
TUNABLE_BOOLEAN, &gbl_enable_cache_internal_nodes, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("enable_datetime_ms_us_sc", NULL, TUNABLE_BOOLEAN,
&gbl_forbid_datetime_ms_us_s2s,
READONLY | INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_datetime_promotion", NULL, TUNABLE_BOOLEAN,
&gbl_forbid_datetime_promotion,
READONLY | INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_datetime_truncation", NULL, TUNABLE_BOOLEAN,
&gbl_forbid_datetime_truncation,
READONLY | INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_inplace_blob_optimization",
"Enables inplace blob updates (blobs are updated in place in "
"their b-tree when possible, not deleted/added) Note: This "
"changes the data-format. (Default: on)",
TUNABLE_BOOLEAN, &gbl_inplace_blob_optimization,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE(
"enable_inplace_blobs",
"Do not update the rowid of a blob entry on an update. (Default: on)",
TUNABLE_BOOLEAN, &gbl_inplace_blobs, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("enable_lowpri_snapisol",
"Give lower priority to locks acquired when updating snapshot "
"state. (Default: off)",
TUNABLE_BOOLEAN, &gbl_lowpri_snapisol_sessions,
READONLY | NOARG, NULL, NULL, NULL, NULL);
/*
REGISTER_TUNABLE("enable_new_snapshot",
"Enable new SNAPSHOT implementation. (Default: off)",
TUNABLE_BOOLEAN, &gbl_new_snapisol, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE(
"enable_new_snapshot_asof",
"Enable new BEGIN TRANSACTION AS OF implementation. (Default: off)",
TUNABLE_BOOLEAN, &gbl_new_snapisol_asof, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("enable_new_snapshot_logging",
"Enable alternate logging scheme. (Default: off)",
TUNABLE_BOOLEAN, &gbl_new_snapisol_logging, READONLY | NOARG,
NULL, NULL, NULL, NULL);
*/
REGISTER_TUNABLE("enable_osql_blob_optimization",
"Replicant tracks which columns are modified in a transaction "
"to allow blob updates to be ommitted if possible. (Default: "
"on)",
TUNABLE_BOOLEAN, &gbl_osql_blob_optimization, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_overflow_page_trace",
"If set, warn when a page order table scan encounters an "
"overflow page. (Default: off)",
TUNABLE_BOOLEAN, &gbl_disable_overflow_page_trace, INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_page_compact_backward_scan", NULL, TUNABLE_INTEGER, &gbl_disable_backward_scan,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_partial_indexes", "If set, allows partial index definitions in table schema. (Default: off)",
TUNABLE_BOOLEAN, &gbl_partial_indexes, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_prefault_udp", "Send lossy prefault requests to replicants. (Default: off)", TUNABLE_BOOLEAN,
&gbl_prefault_udp, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_selectv_range_check",
"If set, SELECTV will send ranges for verification, not every "
"touched record. (Default: off)",
TUNABLE_BOOLEAN, &gbl_selectv_rangechk, NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("disable_selectv_range_check",
"Disables 'enable_selectv_range_check'", TUNABLE_BOOLEAN,
&gbl_selectv_rangechk, INVERSE_VALUE | NOARG, NULL, NULL, NULL,
NULL);
/*
REGISTER_TUNABLE("enable_snapshot_isolation",
"Enable to allow SNAPSHOT level transactions to run against "
"the database. (Default: off)",
TUNABLE_BOOLEAN, &gbl_snapisol, READONLY, NULL, NULL, NULL,
NULL);
*/
REGISTER_TUNABLE("set_snapshot_impl",
"Changes the default snapshot implementation "
"*without enabling snapshot* (default 'modsnap')",
TUNABLE_ENUM, &gbl_snap_impl, READEARLY | READONLY,
snapshot_impl_value, NULL, snapshot_impl_update, NULL);
REGISTER_TUNABLE("enable_sparse_lockerid_map",
"If set, allocates a sparse map of lockers for deadlock "
"resolution. (Default: on)",
TUNABLE_BOOLEAN, &gbl_sparse_lockerid_map, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_sp_strict_assignments", NULL, TUNABLE_INTEGER,
&gbl_spstrictassignments, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE(
"enable_sq_flattening_optimization",
"Enable subquery flattening optimization for OUTER JOINS (Default: off)",
TUNABLE_BOOLEAN, &gbl_enable_sq_flattening_optimization,
NOARG | INTERNAL | EXPERIMENTAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE(
"enable_internal_sql_stmt_caching",
"Enable caching of query plans for internal sql statements (Default: on)",
TUNABLE_BOOLEAN, &gbl_enable_internal_sql_stmt_caching, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("enable_sql_stmt_caching",
"Enable caching of query plans. If followed by \"all\" will "
"cache all queries, including those without parameters. "
"(Default: on)",
TUNABLE_ENUM, &gbl_enable_sql_stmt_caching, READONLY | NOARG,
enable_sql_stmt_caching_value, NULL,
enable_sql_stmt_caching_update, NULL);
REGISTER_TUNABLE("enable_tagged_api",
"Enables tagged api requests. (Default: on)", TUNABLE_BOOLEAN,
&gbl_disable_tagged_api, INVERSE_VALUE | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("enable_upgrade_ahead",
"Occasionally update read records to the newest schema "
"version (saves some processing when reading them later). "
"(Default: off)",
TUNABLE_INTEGER, &gbl_num_record_upgrades, READONLY | NOARG,
NULL, NULL, enable_upgrade_ahead_update, NULL);
REGISTER_TUNABLE("epochms_repts", NULL, TUNABLE_BOOLEAN,
&gbl_berkdb_epochms_repts, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("erroff", "Disables 'erron'", TUNABLE_BOOLEAN, &db->errstaton, INVERSE_VALUE | READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("erron", NULL, TUNABLE_BOOLEAN, &db->errstaton, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("exclusive_blockop_qconsume", "Enables serialization of blockops and queue consumes. (Default: off)",
TUNABLE_BOOLEAN, &gbl_exclusive_blockop_qconsume, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("exitalarmsec", NULL, TUNABLE_INTEGER, &gbl_exit_alarm_sec, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("exit_on_internal_failure", NULL, TUNABLE_BOOLEAN, &gbl_exit_on_internal_error, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("fdb_version_emulate_precdbapi",
"Testing setting: cdb2api will refuse to parse remsql SET, emulating"
" a pre-cdb2api remsql implementation",
TUNABLE_INTEGER, &gbl_fdb_emulate_old, 0, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("fdb_default_version",
"Override the default fdb version",
TUNABLE_INTEGER, &gbl_fdb_default_ver, 0, NULL, NULL,
fdb_default_ver_update, NULL);
REGISTER_TUNABLE("fdbdebg", NULL, TUNABLE_INTEGER, &gbl_fdb_track, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("fdbtrackhints", NULL, TUNABLE_INTEGER, &gbl_fdb_track_hints, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("forbid_ulonglong", "Disallow u_longlong. (Default: on)", TUNABLE_BOOLEAN, &gbl_forbid_ulonglong,
NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("force_highslot", NULL, TUNABLE_BOOLEAN, &gbl_force_highslot, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("foreign_db_allow_cross_class", NULL, TUNABLE_BOOLEAN, &gbl_fdb_allow_cross_classes,
READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_resolve_local", NULL, TUNABLE_BOOLEAN, &gbl_fdb_resolve_local,
READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_push_remote", "Fdb proxy more for reads (OFF turns off writes as well). (Default: on)", TUNABLE_BOOLEAN, &gbl_fdb_push_remote, NOARG, NULL, NULL,
fdb_push_update, NULL);
REGISTER_TUNABLE("foreign_db_push_remote_writes", "Fdb proxy mode for writes (ON turns on reads as well). (Default: on)", TUNABLE_BOOLEAN, &gbl_fdb_push_remote_write, NOARG, NULL, NULL,
fdb_push_write_update, NULL);
REGISTER_TUNABLE("foreign_db_push_redirect",
"Redirect fdb query to run via client instead of on server. (Default: off)", TUNABLE_BOOLEAN,
&gbl_fdb_push_redirect_foreign, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_resolve_local", NULL, TUNABLE_BOOLEAN,
&gbl_fdb_resolve_local, READONLY | NOARG | READEARLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_auth_enabled", "Redirect extern auth data to remote server. (Default: on)",
TUNABLE_BOOLEAN, &gbl_fdb_auth_enabled, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("fullrecovery",
"Attempt to run database "
"recovery from the beginning of "
"available logs. (Default : off)",
TUNABLE_BOOLEAN, &gbl_fullrecovery, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("gbl_exit_on_pthread_create_fail",
"If set, database will exit if thread pools aren't able to "
"create threads. (Default: 1)",
TUNABLE_INTEGER, &gbl_exit_on_pthread_create_fail, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("goslow", NULL, TUNABLE_BOOLEAN, &gbl_goslow, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("gofast", NULL, TUNABLE_BOOLEAN, &gbl_goslow,
INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE(
"group_concat_memory_limit",
"Restrict GROUP_CONCAT from using more than this amount of memory; 0 "
"implies SQLITE_MAX_LENGTH, the limit imposed by sqlite. (Default: 0)",
TUNABLE_INTEGER, &gbl_group_concat_mem_limit, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("heartbeat_check_time", "Raise an error if no heartbeat for this amount of time (in secs). (Default: 5 secs)",
TUNABLE_INTEGER, &gbl_heartbeat_check, READONLY | NOZERO, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("hostname", NULL, TUNABLE_STRING, &gbl_myhostname,
READONLY | READEARLY, NULL, NULL, hostname_update, NULL);
REGISTER_TUNABLE("incoherent_alarm_time", NULL, TUNABLE_INTEGER,
&gbl_incoherent_alarm_time, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("incoherent_msg_freq", NULL, TUNABLE_INTEGER,
&gbl_incoherent_msg_freq, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("inflatelog", NULL, TUNABLE_INTEGER, &gbl_inflate_log,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_bthash", NULL, TUNABLE_INTEGER,
&gbl_init_with_bthash, READONLY | NOZERO, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("init_with_compr", NULL, TUNABLE_ENUM, &gbl_init_with_compr,
READONLY, init_with_compr_value, NULL, init_with_compr_update,
NULL);
REGISTER_TUNABLE("init_with_queue_compr", NULL, TUNABLE_ENUM,
&gbl_init_with_queue_compr, READONLY, init_with_compr_value,
NULL, init_with_queue_compr_update, NULL);
REGISTER_TUNABLE("init_with_compr_blobs", NULL, TUNABLE_ENUM,
&gbl_init_with_compr_blobs, READONLY, init_with_compr_value,
NULL, init_with_compr_blobs_update, NULL);
REGISTER_TUNABLE("init_with_genid48",
"Enables Genid48 for the database. (Default: on)",
TUNABLE_INTEGER, &gbl_init_with_genid48, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_inplace_updates",
"Initialize tables with inplace-update support. (Default: on)",
TUNABLE_BOOLEAN, &gbl_init_with_ipu, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_instant_schema_change",
"Same as 'instant_schema_change'", TUNABLE_BOOLEAN,
&gbl_init_with_instant_sc, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("init_with_ondisk_header",
"Initialize tables with on-disk header. (Default: on)",
TUNABLE_BOOLEAN, &gbl_init_with_odh, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_queue_ondisk_header",
"Initialize queues with on-disk header. (Default: on)",
TUNABLE_BOOLEAN, &gbl_init_with_queue_odh, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_queue_persistent_sequence",
"Initialize queues with persistent sequence numbers. "
"(Default: on)",
TUNABLE_BOOLEAN, &gbl_init_with_queue_persistent_seq,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("init_with_rowlocks",
"Enables row-locks for the database. (Default: 0)",
TUNABLE_INTEGER, &gbl_init_with_rowlocks, READONLY | NOARG,
NULL, NULL, init_with_rowlocks_update, NULL);
REGISTER_TUNABLE(
"init_with_rowlocks_master_only",
"Enables row-locks for the database (master-only). (Default: 0)",
TUNABLE_INTEGER, &gbl_init_with_rowlocks, READONLY | NOARG, NULL, NULL,
init_with_rowlocks_master_only_update, NULL);
REGISTER_TUNABLE("init_with_time_based_genids", "Enables time-based GENIDs",
TUNABLE_BOOLEAN, &gbl_init_with_genid48,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("instant_schema_change",
"When possible (eg: when just adding fields) schema change "
"will not rebuild the underlying tables. (Default: on)",
TUNABLE_BOOLEAN, &gbl_init_with_instant_sc, READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("ioqueue",
"Maximum depth of the I/O prefaulting queue. (Default: 0)",
TUNABLE_INTEGER, &gbl_ioqueue, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("iothreads",
"Number of threads to use for I/O prefaulting. (Default: 0)",
TUNABLE_INTEGER, &gbl_iothreads, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("keycompr",
"Enable index compression (applies to newly allocated index "
"pages, rebuild table to force for all pages.",
TUNABLE_BOOLEAN, &gbl_keycompr, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("largepages", "Enables large pages. (Default: off)",
TUNABLE_BOOLEAN, &gbl_largepages, READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("lclpooledbufs", NULL, TUNABLE_INTEGER, &gbl_lclpooled_buffers,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("lk_hash", NULL, TUNABLE_INTEGER, &gbl_lk_hash,
READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
REGISTER_TUNABLE("lk_part", NULL, TUNABLE_INTEGER, &gbl_lk_parts,
READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
REGISTER_TUNABLE("lkr_hash", NULL, TUNABLE_INTEGER, &gbl_lkr_hash,
READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
REGISTER_TUNABLE("lkr_part", NULL, TUNABLE_INTEGER, &gbl_lkr_parts,
READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
REGISTER_TUNABLE("lock_conflict_trace",
"Dump count of lock conflicts every second. (Default: off)",
TUNABLE_BOOLEAN, &gbl_lock_conflict_trace, NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("lock_dba_user",
"When enabled, 'dba' user cannot be removed and its access "
"permissions cannot be modified. (Default: off)",
TUNABLE_BOOLEAN, &gbl_lock_dba_user, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("log_delete_age", "Log deletion policy", TUNABLE_INTEGER,
&db->log_delete_age, READONLY, NULL, NULL, NULL, NULL);
/* The following 3 tunables have been marked internal as we do not want them
* to be listed via comdb2_tunables system table. log_delete_age's value
* should be sufficient to reflect on the current log deletion policy. */
REGISTER_TUNABLE(
"log_delete_after_backup",
"Set log deletion policy to disable log deletion (can be set by backups)",
TUNABLE_INTEGER, &db->log_delete_age, READONLY | NOARG | INTERNAL, NULL,
NULL, log_delete_after_backup_update, NULL);
REGISTER_TUNABLE(
"log_delete_before_startup",
"Set log deletion policy to disable logs older than database startup time.",
TUNABLE_INTEGER, &db->log_delete_age, READONLY | NOARG | INTERNAL, NULL,
NULL, log_delete_before_startup_update, NULL);
REGISTER_TUNABLE("log_delete_now",
"Set log deletion policy to delete logs as soon as possible.",
TUNABLE_INTEGER, &db->log_delete_age,
READONLY | NOARG | INTERNAL, NULL, NULL, log_delete_now_update,
NULL);
REGISTER_TUNABLE("loghist", NULL, TUNABLE_INTEGER, &gbl_loghist,
READONLY | NOARG, NULL, NULL, loghist_update, NULL);
REGISTER_TUNABLE("loghist_verbose", NULL, TUNABLE_BOOLEAN, &gbl_loghist_verbose,
READONLY | NOARG, NULL, NULL, NULL, NULL);
/*
REGISTER_TUNABLE("mallocregions", NULL, TUNABLE_INTEGER,
&gbl_malloc_regions, READONLY, NULL, NULL, NULL, NULL);
*/
REGISTER_TUNABLE("mask_internal_tunables",
"When enabled, comdb2_tunables system table would not list "
"INTERNAL tunables (Default: on)", TUNABLE_BOOLEAN,
&gbl_mask_internal_tunables, NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("allow_readonly_runtime_mod",
"When enabled, allow modification of READONLY tunables at runtime. (Default: off)", TUNABLE_BOOLEAN,
&gbl_allow_readonly_runtime_mod, NOARG | INTERNAL, NULL, NULL, NULL, NULL);
/*
Note: master_retry_poll_ms' value < 0 was previously ignored without
any error.
*/
REGISTER_TUNABLE("master_retry_poll_ms",
"Have a node wait this long after a master swing before "
"retrying a transaction. (Default: 100ms)",
TUNABLE_INTEGER, &gbl_master_retry_poll_ms, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("debug_blkseq_race", "Pause after adding blkseq to reproduce blkseq race. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_blkseq_race, INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("debug_stat4dump_loop", "Start a thread which calls stat4dump in a loop. (Default: off)",
TUNABLE_BOOLEAN, &gbl_debug_stat4dump_loop, INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("master_swing_osql_verbose",
"Produce verbose trace for SQL handlers detecting a master "
"change. (Default: off)",
TUNABLE_BOOLEAN, &gbl_master_swing_osql_verbose,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("master_swing_osql_verbose_off",
"Disables 'master_swing_osql_verbose'", TUNABLE_BOOLEAN,
&gbl_master_swing_osql_verbose, INVERSE_VALUE | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("master_swing_sock_restart_sleep",
"For testing: sleep in osql_sock_restart when master swings",
TUNABLE_INTEGER, &gbl_master_swing_sock_restart_sleep,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("maxblobretries", NULL, TUNABLE_INTEGER, &gbl_maxblobretries,
READONLY, NULL, maxretries_verify, NULL, NULL);
REGISTER_TUNABLE("maxblockops", NULL, TUNABLE_INTEGER, &gbl_maxblockops,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("maxcolumns",
"Raise the maximum permitted number of columns per table. "
"There is a hard limit of 1024. (Default: 255)",
TUNABLE_INTEGER, &gbl_max_columns_soft_limit, READONLY, NULL,
maxcolumns_verify, NULL, NULL);
REGISTER_TUNABLE("maxcontextskips", NULL, TUNABLE_INTEGER, &gbl_maxcontextskips,
READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("maxosqltransfer",
"Maximum number of record modifications allowed per "
"transaction. (Default: 50000)",
TUNABLE_INTEGER, &g_osql_max_trans, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("max_incoherent_nodes", NULL, TUNABLE_INTEGER,
&gbl_max_incoherent_nodes, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("max_lua_instructions",
"Maximum lua opcodes to execute before we assume the stored "
"procedure is looping and kill it. (Default: 10000)",
TUNABLE_INTEGER, &gbl_max_lua_instructions, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("max_num_compact_pages_per_txn", NULL, TUNABLE_INTEGER,
&gbl_max_num_compact_pages_per_txn, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("maxq",
"Maximum queue depth for write requests. (Default: 192)",
TUNABLE_INTEGER, &gbl_maxqueue, READONLY, NULL, NULL,
maxq_update, NULL);
REGISTER_TUNABLE("maxretries", "Maximum number of times a "
"transactions will be retried on a "
"deadlock. (Default: 500)",
TUNABLE_INTEGER, &gbl_maxretries, READONLY, NULL,
maxretries_verify, NULL, NULL);
REGISTER_TUNABLE(
"max_sqlcache_hints",
"Maximum number of \"hinted\" query plans to keep (global). (Default: 100)",
TUNABLE_INTEGER, &gbl_max_sql_hint_cache, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("max_sqlcache_per_thread",
"Maximum number of plans to cache per sql thread (statement "
"cache is per-thread). (Default: 10)",
TUNABLE_INTEGER, &gbl_max_sqlcache, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("maxt", NULL, TUNABLE_INTEGER, &gbl_maxthreads,
READONLY | NOZERO, NULL, NULL, maxt_update, NULL);
REGISTER_TUNABLE(
"maxwt",
"Maximum number of threads processing write requests. (Default: 8)",
TUNABLE_INTEGER, &gbl_maxwthreads, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("max_query_fingerprints",
"Maximum number of queries to be placed into the fingerprint "
"hash (Default: 1000)",
TUNABLE_INTEGER, &gbl_fingerprint_max_queries, 0, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("memnice", NULL, TUNABLE_INTEGER, &gbl_mem_nice,
READONLY | NOARG, NULL, NULL, memnice_update, NULL);
REGISTER_TUNABLE("mempget_timeout", NULL, TUNABLE_INTEGER,
&__gbl_max_mpalloc_sleeptime, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("memstat_autoreport_freq",
"Dump memory usage to trace files at this frequency (in "
"secs). (Default: 180 secs)",
TUNABLE_INTEGER, &gbl_memstat_freq, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("morecolumns", NULL, TUNABLE_BOOLEAN, &gbl_morecolumns,
READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("move_deadlock_max_attempt", NULL, TUNABLE_INTEGER,
&gbl_move_deadlk_max_attempt, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("name", NULL, TUNABLE_STRING, &gbl_name, DEPRECATED_TUNABLE | READONLY,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("natural_types", "Same as 'nosurprise'", TUNABLE_BOOLEAN,
&gbl_surprise, INVERSE_VALUE | READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("noblobstripe", "Disables 'blobstripe'", TUNABLE_BOOLEAN,
&gbl_blobstripe, INVERSE_VALUE | READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("no_compress_page_compact_log",
"Disables 'compress_page_compact_log'", TUNABLE_BOOLEAN,
&gbl_compress_page_compact_log,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nocrc32c", "Disables 'crc32c'", TUNABLE_BOOLEAN, &gbl_crc32c,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nodeid", NULL, TUNABLE_INTEGER, &gbl_mynodeid, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("noearly", "Disables 'early'", TUNABLE_BOOLEAN, &gbl_early,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_epochms_repts", "Disables 'epochms_repts'",
TUNABLE_BOOLEAN, &gbl_berkdb_epochms_repts,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_exit_on_internal_failure",
"Disables 'exit_on_internal_failure'", TUNABLE_BOOLEAN,
&gbl_exit_on_internal_error, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nokeycompr", "Disables 'keycompr'", TUNABLE_BOOLEAN,
&gbl_keycompr, INVERSE_VALUE | READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("no_lock_conflict_trace", "Disables 'lock_conflict_trace'",
TUNABLE_BOOLEAN, &gbl_lock_conflict_trace,
INVERSE_VALUE | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nonames", NULL, TUNABLE_BOOLEAN, &gbl_nonames,
READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_null_blob_fix", "Disables 'null_blob_fix'",
TUNABLE_BOOLEAN, &gbl_disallow_null_blobs,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("norcache", "Disables 'rcache'", TUNABLE_BOOLEAN, &gbl_rcache,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("noreallearly", "Disables 'reallearly'", TUNABLE_BOOLEAN,
&gbl_reallyearly, INVERSE_VALUE | READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("norepdebug", "Disables 'repdebug'", TUNABLE_BOOLEAN,
&gbl_repdebug, INVERSE_VALUE | READONLY | NOARG, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("no_rep_process_txn_trace", "Disables 'rep_process_txn_trace'",
TUNABLE_BOOLEAN, &gbl_rep_process_txn_time,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_round_robin_stripes", "Disables 'round_robin_stripes'",
TUNABLE_BOOLEAN, &gbl_round_robin_stripes,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_sc_inco_chk", NULL, TUNABLE_BOOLEAN, &gbl_sc_inco_chk,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_static_tag_blob_fix", NULL, TUNABLE_BOOLEAN,
&gbl_force_notnull_static_tag_blobs,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nosurprise", NULL, TUNABLE_BOOLEAN, &gbl_surprise,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("notimeout", "Turns off SQL timeouts. (Default: off)",
TUNABLE_BOOLEAN, &gbl_notimeouts, NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("noudp", NULL, TUNABLE_BOOLEAN, &gbl_udp,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_update_delete_limit", NULL, TUNABLE_BOOLEAN,
&gbl_update_delete_limit, INVERSE_VALUE | READONLY | NOARG,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nowatch", "Disable watchdog. Watchdog aborts "
"the database if basic things like "
"creating threads, allocating memory, "
"etc. doesn't work. (Default: off)",
TUNABLE_BOOLEAN, &gbl_watchdog_disable_at_start,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("null_blob_fix", NULL, TUNABLE_BOOLEAN,
&gbl_disallow_null_blobs, READONLY | NOARG, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE(
"nullfkey",
"Do not enforce foreign key constraints for null keys. (Default: on)",
TUNABLE_BOOLEAN, &gbl_nullfkey, READONLY | NOARG | READEARLY, NULL, NULL,
NULL, NULL);
/*
REGISTER_TUNABLE("nullsort", NULL, TUNABLE_ENUM,
&placeholder, READONLY, NULL, NULL, NULL, NULL);
*/
REGISTER_TUNABLE("num_contexts", NULL, TUNABLE_INTEGER, &gbl_num_contexts,
READONLY | NOZERO, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("num_record_converts",
"During schema changes, pack this many records into a "
"transaction. (Default: 100)",
TUNABLE_INTEGER, &gbl_num_record_converts, READONLY | NOZERO,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE(
"old_column_names",
"Generate and use column names from sqlite version 3.8.9 (Default: on)",
TUNABLE_BOOLEAN, &gbl_old_column_names, EXPERIMENTAL | INTERNAL, NULL,
NULL, NULL, NULL);
/* Backwards compatibility: This tunable DOES expect an argument. */
REGISTER_TUNABLE("oldrangexlim", NULL, TUNABLE_BOOLEAN,
&gbl_honor_rangextunit_for_old_apis, READONLY, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("on_del_set_null_feature", "Enables support for ON DELETE SET NULL foreign key constraint action (Default: ON)",
TUNABLE_BOOLEAN, &gbl_on_del_set_null_feature, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("optimize_repdb_truncate",
"Enables use of optimized repdb truncate code. (Default: on)",
TUNABLE_BOOLEAN, &gbl_optimize_truncate_repdb,
READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_bkoff_netsend", NULL, TUNABLE_INTEGER,
&gbl_osql_bkoff_netsend, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_bkoff_netsend_lmt", NULL, TUNABLE_INTEGER,
&gbl_osql_bkoff_netsend_lmt, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osqlprefaultthreads", "If set, send prefaulting hints to nodes. (Default: 0)", TUNABLE_INTEGER,
&gbl_osqlpfault_threads, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_verify_ext_chk",
"For block transaction mode only - after this many verify "
"errors, check if transaction is non-commitable (see default "
"isolation level). (Default: on)",
TUNABLE_INTEGER, &gbl_osql_verify_ext_chk, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_verify_retry_max",
"Retry a transaction on a verify error this many times (see "
"optimistic concurrency control). (Default: 499)",
TUNABLE_INTEGER, &gbl_osql_verify_retries_max, 0, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("override_cachekb", NULL, TUNABLE_INTEGER, &db->override_cacheszkb, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("page_compact_latency_ms", NULL, TUNABLE_INTEGER, &gbl_pg_compact_latency_ms, READONLY, NULL, NULL,
NULL, NULL);
REGISTER_TUNABLE("page_compact_target_ff", NULL, TUNABLE_DOUBLE, &gbl_pg_compact_target_ff, NOARG, NULL, NULL,
page_compact_target_ff_update, NULL);
REGISTER_TUNABLE("page_compact_thresh_ff", NULL, TUNABLE_DOUBLE, &gbl_pg_compact_thresh, READONLY | NOARG, NULL, NULL,
page_compact_thresh_ff_update, NULL);
REGISTER_TUNABLE("page_latches",
"If set, in rowlocks mode, will acquire fast latches on pages "
"instead of full locks. (Default: off)",
TUNABLE_BOOLEAN, &gbl_page_latches, READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("pageordertablescan", "Perform table scans in page order and not row order. (Default: off)",
TUNABLE_BOOLEAN, &gbl_page_order_table_scan, NOARG, NULL, NULL, page_order_table_scan_update, NULL);
REGISTER_TUNABLE("llmeta_pagesize", "Init-option for llmeta and metadb pagesizes. (Default: 4096)", TUNABLE_INTEGER,
&gbl_llmeta_pagesize, READONLY | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("parallel_recovery", NULL, TUNABLE_INTEGER,
&gbl_parallel_recovery_threads, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("penaltyincpercent", NULL, TUNABLE_INTEGER,
&gbl_penaltyincpercent, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("perfect_ckp", NULL, TUNABLE_INTEGER, &gbl_use_perfect_ckp,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("portmux_bind_path", NULL, TUNABLE_STRING,
NULL, READONLY | READEARLY, portmux_bind_path_get, NULL,
portmux_bind_path_set, NULL);
REGISTER_TUNABLE("portmux_port", NULL, TUNABLE_INTEGER, &portmux_port,
READONLY | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("prefaulthelper_blockops", NULL, TUNABLE_INTEGER,
&gbl_prefaulthelper_blockops, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("prefaulthelper_sqlreadahead", NULL, TUNABLE_INTEGER,
&gbl_prefaulthelper_sqlreadahead, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("prefaulthelperthreads",
"Max number of prefault helper threads. (Default: 0)",
TUNABLE_INTEGER, &gbl_prefaulthelperthreads, READONLY, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("print_syntax_err",
"Trace all SQL with syntax errors. (Default: off)",
TUNABLE_BOOLEAN, &gbl_print_syntax_err, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("prioritize_queries",
"Prioritize SQL queries based on loaded rulesets. "
"(Default: off)", TUNABLE_BOOLEAN, &gbl_prioritize_queries,
EXPERIMENTAL | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("verbose_prioritize_queries",
"Show prioritized SQL queries based on origin and "
"fingerprint. (Default: off)", TUNABLE_BOOLEAN,
&gbl_verbose_prioritize_queries, EXPERIMENTAL | INTERNAL,
NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("random_lock_release_interval", NULL, TUNABLE_INTEGER,
&gbl_sql_random_release_interval, READONLY, NULL, NULL, NULL,