Add release notes for 0.263

[tdcmeehan]

Missing Release Notes

Extracted Release Notes

• Support distinct types #16529 (Author: Pranjal Shankhdhar): Support distinct types
  • Support distinct user defined types.
• Add LimitWithoutOrderByChecker for filtering non-deterministic types #16568 (Author: Ajay George): Add LimitWithoutOrderByChecker for filtering non-deterministic types
  • Improve Verifier by skipping the non-deterministic queries which have a LIMIT sub clause without ORDER BY.
• Add support to perform heapDump on exceeded memory limit failures #16669 (Author: Arjun Gupta): Add support to perform heapDump on exceeded memory limit failures
  • Add a new session property heap_dump_on_exceeded_memory_limit_enabled to enable heapdump on exceeded memory failures. The heapdump file directory can be provided using exceeded_memory_limit_heap_dump_file_directory session property.
• Fix distinct aggregation input filtering when input mask has nulls #16747 (Author: James Petty): Fix distinct aggregation input filtering when input mask has nulls
  • Fix a potential correctness bug in distinct aggregations when combined with a filtering mask containing null values.
• Implement key-based sampling in the planner #16766 (Author: Sreeni Viswanadha): Implement key-based sampling in the planner
  • Added Smart Sampling feature that samples the tables at query (planning) time. This helps in cases when the user is just exploring the data, testing a pipeline or looking for trends. We sample all the tables (and only tables) in such a way that all "key-based" operations like JOIN/GROUP BY/window functions etc will be complete for the sampled keys.
• Buffer and spill only required channels for distinct aggregates #16788 (Author: Arjun Gupta): Buffer and spill only required channels for distinct aggregates
  • Improve spilling CPU and memory efficiency for distinct and order by aggregations.

All Commits

• ae77100 Implement key-based sampling using a deterministic/stable sampling function (Sreeni Viswanadha)
• 0b07436 Refactor SqlTypeBytecodeExpression (Pranjal Shankhdhar)
• d02882d Add support to write codegen scalar functions (Pranjal Shankhdhar)
• bfdd185 Remove state/PageBuilder from scalar map/array operators (Sreeni Viswanadha)
• 4fbc2b1 Fix coordinator - resource manager proxy communication (Swapnil Tailor)
• f5fe69e Ensure correct ordering of heartbeats in resource manager (Tim Meehan)
• 8d87029 Config for DwrfStripeCache in OrcReader (Arunachalam Thirupathi)
• c970812 Disable flaky tests (abhiseksaikia)
• 809dfe8 Add stats for materialized view query rewrite (Zac Wen)
• d044348 Disabling flaky TestQueues test (Swapnil Tailor)
• a027b23 Check for RLE masks in DistinctingAccumulator (James Petty)
• 9f746bb Test RLE masks on distinct aggregations (James Petty)
• fb4ef59 Improve AccumulatorCompiler generated code (James Petty)
• 5dee73f Categorize metastore user errors correctly (Nikhil Collooru)
• 81ff17a Buffer and spill only required channels for distinct aggregates (Arjun Gupta)
• 589b0a5 Use block.mayHaveNull() to skip isNull checks in some block serializers (James Petty)
• b2e62d9 Deserialize primitive arrays with no null positions via direct copy (James Petty)
• 645ef77 Avoid all-false valueIsNull in Row and Array block deserializer (James Petty)
• 2d4859e Add LimitWithoutOrderByChecker for filtering non-deterministic types (Ajay George)
• 03efeeb Fix parameter name in StripeMetadataSourceFactory (Arunachalam Thirupathi)
• 727fac6 Fix dictionary row group size test (Arunachalam Thirupathi)
• 7233924 Convert StripeMetadataSource to Factory pattern (Arunachalam Thirupathi)
• 6cb9a8d Fix incorrect dwrf file raw size (Arunachalam Thirupathi)
• 7424533 Support multiple candidates for materialized view (Zac Wen)
• cfc45b7 Revert "Record operator output before addPage in LocalExchangeSink" (Neerad Somanchi)
• e809375 Revert "Ensure blocks are fully loaded by when enforcing output layouts" (Neerad Somanchi)
• cae41c2 Revert "Improve PartitioningExchanger performance" (Neerad Somanchi)
• 0056030 Config for loose memory accounting to run queries without OOM (SOURAV PAL)
• 0fb160b Fix Resource Group Distributed Queuing (Swapnil Tailor)
• 84172e5 Config for DwrfStripeCache in OrcWriter (Arunachalam Thirupathi)
• 74257e1 Handle pushdown predicates in MetadataQueryOptimizer (Zhan Yuan)
• e389528 Include all tables in the column mapping of materialized views (Ge Gao)
• 8751231 Support GROUP BY in materialized view rewriting (Zac Wen)
• 2d0e848 Process expressions inside IN and IF for materialized view rewrite (Zac Wen)
• 1098248 Support distinct types (Pranjal Shankhdhar)
• 8ebf7d9 Enabling flaky TestQueues test (Swapnil Tailor)
• 70a81bc Fix distinct aggretation input filtering when input mask has nulls (James Petty)
• fb5b8b5 Enabling Flaky Tests As they run reliably now (Swapnil Tailor)
• ef141fe Support for query heartbeat from coordinator that is shutting down (Abhisek Gautam Saikia)
• 80810d5 Revert "Handle fully filter pushdown for metadata query rewrite" (Zhan Yuan)
• ed2a648 Add support to perform heapDump on exceeded memory limit failures (Arjun Gupta)