v1.3.0

This version contains 98 contributions from 10 contributors. There are 144 files changed; 12,635 insertions; and 4,341 deletions.

Added

• Add license headers and CI check (#1940)
• Add support to modify shard width at build time (#1921)
• Add 'bench' Makefile target and run fewer concurrency level benchmarks (#1915)
• Add server stats to /info endpoint (#1859)
• Implement config options for block profile rate and mutex fraction (#1910)
• Implement global open file counter using syswrap (to scale past system open file limits) (#1906)
• Implement global mmap counter with fallback (to scale past system mmap limits) (#1903)
• Add shard width to index info in schema (allows client to get shard width at run time) (#1881)
• Add shift operator (#1761)
• Support advertise address and listen on 0.0.0.0 (#1832)
• Added convenience function to efficiently calculate size of a roaring bitmap in bytes (#1839)
• Make sure more tests and benchmarks can have their temp dir set by flag (#1831)
• Add sliceascending/slicedescending striped benchmarks (#1763)
• Add setValue test and benchmarks (#1820)
• Add a test for groupby filter with RangeLTLT (#1818)
• Add tests for GroupBy with keys; removes unused Bit message from proto (#1811)

Fixed

• Update to latest memberlist fork with race fixes (#1944)
• Return original error instead of cause in handler (#1943)
• Validate (and panic) on duplicate PQL arguments (#1938)
• Add correct content type to query responses Fixes #1873 (#1936)
• Address race condition by getting cluster nodes with lock (#1931)
• Make sure to unmap containers before modifying (#1876)
• Avoid probable race when creating fragments (#1863)
• Improve help strings for metrics options (#1887)
• Ensure ClearRow() arguments get translated (#1848)
• Prevent omitting zero ids on columnattrs (#1846)
• Set cache size to 0 if cache type is none (#1842)
• Prevent deadlock in replication logic on reopening a store (#1834)
• Pass loggers around properly in gossip (#1835)
• Include read lock in cluster.Nodes() (#1836)
• Raise an error on Rows() query against a time field with noStandardView: true (#1826)
• Don't delete test fragment data (part of repo) (#1827)
• Fix bug on upper end of bsi range queries (#1822)
• Group by fixes (#1802)

Changed

• Switch to GolangCI lint (#1924)
• Return empty result set when query empty (#1937)
• Add Go 1.12 to CircleCI (#1909)
• Ignore fragment files from shards node doesn't own (#1900)
• Go module support. Use Modules instead of dep for dependencies (#1616)
• Merge Range() into Row() call. (#1804)
• Add from/to range arguments to Rows() call (#1851)
• Fixes Store call error messages, Rows doesn't need field argument (#1830)

Performance

• BTree performance improvements (#1916)
• Make Containers smaller, especially when they have small contents (#1901)
• Address UnionInPlace performance regressions (#1897)
• Small write path for import-roaring. Makes small imports faster (#1892)
• Small write path for imports (#1871)
• Remove copy for pilosa roaring files (#1865)
• Disable anti-entropy if not using replication [performance] (#1814)
• Group By—skip 0 counts as early as possible (#1803)