Fix flaky RelocationIT

[naveentatikonda]

Description

Fix the flaky test blocking 3.6 build, which is failing the cat nodes check on a multinode cluster
https://build.ci.opensearch.org/blue/organizations/jenkins/integ-test/detail/integ-test/10988/pipeline/160/

 2> REPRODUCE WITH: ./gradlew ':integTestMultiNode' --tests 'org.opensearch.knn.index.RelocationIT.testForcemerge_whenRelocation_and_abortSuccess' -Dtests.seed=9AAAAB31B529BAB4 -Dtests.security.manager=false -Dtests.locale=ce-RU -Dtests.timezone=Europe/San_Marino -Druntime.java=25

  2> java.lang.AssertionError: expected:<2> but was:<1>

        at __randomizedtesting.SeedInfo.seed([9AAAAB31B529BAB4:643BA395DA31358A]:0)

        at org.junit.Assert.fail(Assert.java:89)

        at org.junit.Assert.failNotEquals(Assert.java:835)

        at org.junit.Assert.assertEquals(Assert.java:647)

        at org.junit.Assert.assertEquals(Assert.java:633)

        at org.opensearch.knn.index.RelocationIT.testForcemerge_whenRelocation_and_abortSuccess(RelocationIT.java:42)

  2> NOTE: leaving temporary files on disk at: /tmp/tmp43qwmnjw/k-NN/build/testrun/integTestMultiNode/temp/org.opensearch.knn.index.RelocationIT_9AAAAB31B529BAB4-001

  2> NOTE: test params are: codec=Asserting(Lucene104): {}, docValues:{}, maxPointsInLeafNode=421, maxMBSortInHeap=6.0114818495097335, sim=Asserting(RandomSimilarity(queryNorm=true): {}), locale=ce-RU, timezone=Europe/San_Marino

  2> NOTE: Linux 6.1.140-154.222.amzn2023.x86_64 amd64/Eclipse Adoptium 25 (64-bit)/cpus=4,threads=2,free=388609152,total=536870912

  2> NOTE: All tests run in this JVM: [RelocationIT]

1 test completed, 1 failed

=== Standard output of node `node{::integTestMultiNode-0}` ===

=== Standard error of node `node{::integTestMultiNode-0}` ===

=== Standard output of node `node{::integTestMultiNode-1}` ===

=== Standard error of node `node{::integTestMultiNode-1}` ===

FAILURE: Build failed with an exception.

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.10%. Comparing base (dcac8ae) to head (b989e83).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3226      +/-   ##
============================================
- Coverage     83.11%   83.10%   -0.02%     
  Complexity     4210     4210              
============================================
  Files           453      453              
  Lines         15455    15455              
  Branches       1972     1972              
============================================
- Hits          12846    12844       -2     
- Misses         1814     1816       +2     
  Partials        795      795              

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