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#16905 PR: Open merges with a merge context again

19.2 minutes ago 0 comments 0 votes 0 watches github-actions[bot], jimczi

Since 16883, merges of vectors and stored fields that open the data file again use the reader's own ... A directory can no longer tell a merge apart, so for example DirectIODirectory doesn't use direct I ... An input is still shared whenever it is efficient for the context, so merges and sequential values ...

#16571 PR: Let a merge write more than one segment

1.3 hours ago 38 comments 0 votes 0 watches dweiss, github-actions[bot], jimczi, mccullocht, michaeljmarshall

A merge takes N segments and writes one. This lets it take N and write M, by giving each output a contiguous document range of every input: ... Called after the merge readers are open, so boundaries can be placed on values read from the ...

github-actions[bot] 9.3 days ago:	This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!
michaeljmarshall 25.1 days ago:	While working on a POC to integrate with this feature, I ran into an issue. I had my 🤖 put together a fix. It's in this commit https://github.com/apache/lucene/commit/5b726e0847ac8fa6263c0b9c32ec4cb53c131a44 ...

#16815 PR: Add the ability to keep the graph structures off heap during merges

17.6 hours ago 4 comments 0 votes 0 watches Pulkitg64, github-actions[bot], msokolov, navneet1v

Description PR add the ability to move the graph data structure which is getting building during ... Vectors are already present in offheap. This PR adds the ability to keep the graph structure off heap too.

navneet1v 17.6 hours ago:	@Pulkitg64, @msokolov can one of you please check the PR? If there are other benchmarks I need to perform let me know.
navneet1v 12 days ago:	Adding 1 more experiment detail: Off-heap on : Running on candidate with Offheap index builds on ... Baseline: Baseline code before this change Off-heap off: Running on candidate with Offheap index ...

#16865 PR: Improve size caching in SegmentCommitInfo

22.7 hours ago 8 comments 0 votes 0 watches chrisberkhout, github-actions[bot], nicktindall, uschindler

Description SegmentCommitInfosizeInBytes reads the volatile cache to determine if a computation ... If someone calls generationAdvanced while this is going on we have a TOCTOU race. The race can result in 1.

nicktindall 22.7 hours ago:	The more I understand about this the more it feels like we should avoid reading sizeInBytes at the ... Perhaps hold off looking at this until I've investigated how we might avoid this issue on the ES ... I think it's probably a good idea to protect against caching an invalid value on the lucene side, ...
nicktindall 1.1 days ago:	Thanks both. I've pushed a version that uses an AtomicLong with compare-and-set, as @uschindler suggested, and ... The problem with compareAndSet(-1, size) is that it can't tell the -1 it read before computing ...

#16904 PR: docs : fix stale method reference in package docs (org.apache.lucene.…

23.9 hours ago 0 comments 0 votes 0 watches Deepcodr, github-actions[bot]

Description Javadoc examples in package-info (org.apache.lucene.collation) call IndexSearcher ...

#16903: HNSW merges with asymmetric quantization read the query-side records at random during diversity ...

1.2 days ago 0 comments 0 votes 0 watches goankur

Description With an asymmetric encoding such as SINGLE_BIT_QUERY_NIBBLE, a merge writes a ... The graph merge scores with AsymmetricQuantizedRandomVectorScorerSupplier, whose setScoringOrdinal( ... The read for the node being inserted is fine: it happens once per node, in order (HnswGraphBuilder, ...

#15630 PR: Added support for writing empty full-precision vector files

1.3 days ago 6 comments 0 votes 0 watches Pulkitg64, benwtrent, github-actions[bot], mikemccand

Description Issue: 13158 With the help of claude code, I have tried to add support for ... This is the first step of adding read-only index support. Once empty raw vector-data files are generated along with full-precision files, the user can choose ...

github-actions[bot] 1.3 days ago:	This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!
Pulkitg64 17.7 days ago:	Oh no. I think I accidentally deleted this branch when I was doing cleanup of my forked Lucene. I have restored the branch now.

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