[ML] fix random sampling background query consistency #83676
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tveasey
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* upstream/master: (166 commits) Bind host all instead of just _site_ when needed (elastic#83145) [DOCS] Fix min/max agg snippets for histograms (elastic#83695) [DOCS] Add deprecation notice for system indices (elastic#83688) Cache ILM policy name on IndexMetadata (elastic#83603) [DOCS] Fix 8.0 breaking changes sort order (elastic#83685) [ML] fix random sampling background query consistency (elastic#83676) Move internal APIs into their own namespace '_internal' Runtime fields core-with-mapped tests support tsdb (elastic#83577) Optimize calculating the presence of a quorum (elastic#83638) Use switch expressions in EnableAllocationDecider and NodeShutdownAllocationDecider (elastic#83641) Note libffi error message in tmpdir docs (elastic#83662) Fix TransportDesiredNodesActionsIT batch tests (elastic#83659) [DOCS] Remove unused upgrade doc files (elastic#83617) [ML] Wait for model process to stop in stop deployment (elastic#83644) [ML] Fix submit after shutdown in process worker service (elastic#83645) Remove req/resp classes associated with HLRC (elastic#83599) Introduce index.version.compatibility setting (elastic#83264) Rename InternalTestCluster#getMasterNodeInstance (elastic#83407) Mute TimeSeriesIndexSearcherTests testCollectInOrderAcrossSegments (elastic#83648) Add rollover add max_primary_shard_docs condition (elastic#80981) ... # Conflicts: # x-pack/plugin/rollup/build.gradle # x-pack/plugin/rollup/src/test/java/org/elasticsearch/xpack/rollup/v2/RollupActionSingleNodeTests.java
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There was a consistency bug where the documents returned by the created scorer could change while looking at the same shard. This can occur if multiple weights are created from the same query.
For scenarios like Significant Terms/Text, we need a consistent view of each shard when using the same probability and seed.
This commit ensures this by creating a new random value supplier seeded by the shard hash & seed.