[Segment Replication] Update PrimaryShardAllocator to prefer replicas with higher replication checkpoint (#4041)#4252
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dreamer-89 merged 1 commit intoopensearch-project:2.xfrom Aug 18, 2022
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… with higher replication checkpoint (opensearch-project#4041) * [Segment Replication] Update PrimaryShardAllocator to prefer replicas having higher replication checkpoint Signed-off-by: Suraj Singh <surajrider@gmail.com> * Use empty replication checkpoint to avoid NPE Signed-off-by: Suraj Singh <surajrider@gmail.com> * Update NodeGatewayStartedShards to optionally wire in/out ReplicationCheckpoint field Signed-off-by: Suraj Singh <surajrider@gmail.com> * Use default replication checkpoint causing EOF errors on empty checkpoint * Add indexSettings to GatewayAllocator to allow ReplicationCheckpoint comparator only for segrep enabled indices * Add unit tests for primary term first replica promotion & comparator fix * Fix NPE on empty IndexMetadata * Remove settings from AllocationService and directly inject in GatewayAllocator * Add more unit tests and minor code clean up Signed-off-by: Suraj Singh <surajrider@gmail.com> * Address review comments & integration test Signed-off-by: Suraj Singh <surajrider@gmail.com> * Fix comparator on null ReplicationCheckpoint Signed-off-by: Suraj Singh <surajrider@gmail.com> Signed-off-by: Suraj Singh <surajrider@gmail.com>
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@@ Coverage Diff @@
## 2.x #4252 +/- ##
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- Coverage 70.63% 70.57% -0.06%
+ Complexity 56943 56883 -60
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Files 4570 4570
Lines 273499 273527 +28
Branches 40103 40110 +7
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- Hits 193180 193037 -143
- Misses 64206 64315 +109
- Partials 16113 16175 +62
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Bukhtawar
approved these changes
Aug 18, 2022
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Backport of d308a29
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