Timescaledb: 2.2.1 Release

This maintenance release contains bugfixes since the 2.2.0 release. We deem it high priority for upgrading.

This release extends Skip Scan to multinode by enabling the pushdown of DISTINCT to data nodes. It also fixes a number of bugs in the implementation of Skip Scan, in distributed hypertables, in creation of indexes, in compression, and in policies.

Features * #3113 Pushdown "SELECT DISTINCT" in multi-node to allow use of Skip Scan

Bugfixes * #3101 Use commit date in get_git_commit() * #3102 Fix REINDEX TABLE for distributed hypertables * #3104 Fix use after free in add_reorder_policy * #3106 Fix use after free in chunk_api_get_chunk_stats * #3109 Copy recreated object permissions on update * #3111 Fix CMAKE_BUILD_TYPE check * #3112 Use %u to format Oid instead of %d * #3118 Fix use after free in cache * #3123 Fix crash while using REINDEX TABLE CONCURRENTLY * #3135 Fix SkipScan path generation in DISTINCT queries with expressions * #3146 Fix SkipScan for IndexPaths without pathkeys * #3147 Skip ChunkAppend if AppendPath has no children * #3148 Make SELECT DISTINCT handle non-var targetlists * #3151 Fix fdw_relinfo_get assertion failure on DELETE * #3155 Inherit CFLAGS from PostgreSQL * #3169 Fix incorrect type cast in compression policy * #3183 Fix segfault in calculate_chunk_interval * #3185 Fix wrong datatype for integer based retention policy

Thanks * @Dead2, @dv8472 and @einsibjarni for reporting an issue with multinode queries and views * @aelg for reporting an issue with policies on integer-based hypertables * @hperez75 for reporting an issue with Skip Scan * @nathanloisel for reporting an issue with compression on hypertables with integer-based timestamps * @xin-hedera for fixing an issue with compression on hypertables with integer-based timestamps

The music for this release was Justin Timberlake's The 20/20 Experience – 2 of 2.