[Backport 2.x] Filter shards for sliced search at coordinator #17025
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* Filter shards for sliced search at coordinator Prior to this commit, a sliced search would fan out to every shard, then apply a MatchNoDocsQuery filter on shards that don't correspond to the current slice. This still creates a (useless) search context on each shard for every slice, though. For a long-running sliced scroll, this can quickly exhaust the number of available scroll contexts. This change avoids fanning out to all the shards by checking at the coordinator if a shard is matched by the current slice. This should reduce the number of open scroll contexts to max(numShards, numSlices) instead of numShards * numSlices. --------- Signed-off-by: Michael Froh <[email protected]> (cherry picked from commit f9c239d) Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
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❌ Gradle check result for 32f689e: FAILURE Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change? |
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server/src/main/java/org/opensearch/action/admin/cluster/shards/ClusterSearchShardsRequest.java
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server/src/main/java/org/opensearch/action/admin/cluster/shards/ClusterSearchShardsRequest.java
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server/src/main/java/org/opensearch/cluster/routing/OperationRouting.java
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Signed-off-by: Andriy Redko <[email protected]>
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❌ Gradle check result for 72ed864: FAILURE Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change? |
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## 2.x #17025 +/- ##
============================================
+ Coverage 71.83% 71.96% +0.12%
- Complexity 65588 65683 +95
============================================
Files 5318 5318
Lines 305779 305807 +28
Branches 44583 44596 +13
============================================
+ Hits 219653 220061 +408
+ Misses 67817 67388 -429
- Partials 18309 18358 +49 ☔ View full report in Codecov by Sentry. |
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Backport f9c239d from #16771.