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GC unmarked-sweep countdown: safety net against transient GC concurrency races #770

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Merged
fh-ms merged 3 commits into from
Jul 23, 2026
Merged

GC unmarked-sweep countdown: safety net against transient GC concurrency races #770

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3b686b7
Add a GC unmarked-sweep countdown as a safety net against transient r…
fh-ms Jul 21, 2026
6088f31
Enforce the GC sweep-threshold upper bound in the entity cache (PR re…
fh-ms Jul 21, 2026
3c6214a
Make garbageCollectionSweepThreshold a default method for API compati…
fh-ms Jul 23, 2026
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3 changes: 3 additions & 0 deletions docs/modules/storage/pages/configuration/housekeeping.adoc
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Expand Up @@ -28,6 +28,9 @@ Available properties are:

|housekeeping-maximum-time-budget
|The upper limit of the housekeeping time budgets. Default is 0.5 seconds.

|gc-sweep-threshold
|Number of consecutive garbage-collection sweeps an entity must remain unmarked before it is deleted. A safety net against rare, transient GC concurrency races; higher values keep unreachable entities slightly longer. Valid range is 1 to 127, default is 3.
|===

== Enabling Adaptive Housekeeping for Write-Intensive Data Applications
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4 changes: 4 additions & 0 deletions docs/modules/storage/pages/configuration/properties.adoc
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Expand Up @@ -94,6 +94,10 @@ They can be found as constants in `EmbeddedStorageConfigurationPropertyNames`.
|The upper limit of the housekeeping time budgets. Default is 0.5 seconds.
|xref:#type-duration[Duration]

|gc-sweep-threshold
|Number of consecutive garbage-collection sweeps an entity must remain unmarked before it is deleted (a safety net against rare, transient GC concurrency races). Valid range is 1 to 127, default is 3.
|xref:#type-integer[Integer]

|entity-cache-threshold
|Abstract threshold value for the lifetime of entities in the cache. Default is `1000000000`.
|xref:#type-long[Long]
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