2 Commits (main)

Author	SHA1	Message	Date
Ivan Kalita	08e3c4385f	feat(metastore): shard sections queries over index files (#20134) ... Running metastore queriesin a distributed manner using query engine workers: - Build a distributed metastore plan from GetIndexes and execute it via the v2 scheduler/worker pipeline - Split the request into per-index PointersScan tasks, then fan-in and CollectSections to produce final section descriptors - Add physical plan + protobuf support for Merge/PointersScan, improve tracing/cleanup, and add coverage for planner/workflow/proto roundtrips	2 weeks ago
Ivan Kalita	e4ec8441d3	feat(metastore): use arrow for scanning and blooms (#20234) ... Changing metastore implementation to work with arrow.RecordBatch without intermediate materialization to structs. metastore.Sections now uses new metastore.GetIndexes, metastore.IndexSectionsReader and metastore.CollectSections. We'd like to run metastore queries in a distributed manner using engine v2. In order to achieve that we need to split the work that metastore.Sections does internally, schedule it on different workers, and collect the results. The engine achieves that via pipelines that produce arrow.RecordBatch-es. In this PR the metastore.Sections is updated such a way to make it easier to integrate metastore with the engine.	2 weeks ago