Late Materialization (Query-Then-Fetch) for pure Sort queries - #21836

Merged

mch2 merged 19 commits into

opensearch-project:mainfrom

expani:qtf-clean

May 28, 2026

Commits on May 25, 2026

QTF planner foundation: late-materialization rewriter + scheduler stage skeleton
expani
committed
c29307f
QTF data-node: row-id fetch, global-id query phase, context management
alchemist51
committed
d8d057a
QTF coordinator integration: scheduler wiring, leak fixes, E2E IT
expani
committed
adbd8be

Commits on May 26, 2026

Make it working
alchemist51
committed
3ad9c5a
Spotless and LoggerUsage checks
expani
committed
4f269aa

Commits on May 27, 2026

Fixed a bug in Rewritter for properly mapping above sort operators and handled multi shards in datanode readerctx
expani
committed
b462dba
Made fetchByRowIds async
expani
committed
41f31eb
Refactored to remove duplicate code
expani
committed
8161fa5
Merge remote-tracking branch 'upstream/main' into qtf-clean
alchemist51
committed
fabd859
Add imports correctly
alchemist51
committed
0cf1c79
Test failures and error handling
expani
committed
8fb7e16
Reverted the disabling of infer schema caused by PR-21826
expani
committed
1e92782

Commits on May 28, 2026

Merge remote-tracking branch 'mainline/main' into qtf-clean
expani
committed
da16290
Fix QtfSubstraitDumpIT after merge
expani
committed
a64341a
Fixed a bug with double closing the sink on empty shard results
expani
committed
5c0ccdb
Fixed thread safety to use explicit lock AND removed loggers used in debugging
expani
committed
58cdfd1
Flipping loggers to ERROR for debugging in CI as not reproable locally
expani
committed
4fb7d7b
Fixed a NASTY bug
expani
committed
b6c1cc1
Merge remote-tracking branch 'mainline/main' into qtf-clean
expani
committed
d28655a