[jira] [Created] (SOLR-11821) ConcurrentModificationException in SimSolrCloudTestCase.tearDown

["Shalin Shekhar Mangar (JIRA)" <ji...@apache.org>]

Shalin Shekhar Mangar created SOLR-11821:
--------------------------------------------

             Summary: ConcurrentModificationException in SimSolrCloudTestCase.tearDown
                 Key: SOLR-11821
                 URL: https://issues.apache.org/jira/browse/SOLR-11821
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: AutoScaling, Tests
            Reporter: Shalin Shekhar Mangar
             Fix For: master (8.0), 7.3


I noticed a few test failures on jenkins such as the following:
{code}
FAILED:  org.apache.solr.cloud.autoscaling.sim.TestComputePlanAction.testNodeLost

Error Message:


Stack Trace:
java.util.ConcurrentModificationException
        at __randomizedtesting.SeedInfo.seed([A41248828EFF34E3:1B07867C0D155165]:0)
        at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:937)
        at java.base/java.util.ArrayList$Itr.next(ArrayList.java:891)
        at org.apache.solr.cloud.autoscaling.sim.SimSolrCloudTestCase.tearDown(SimSolrCloudTestCase.java:141)
{code}

The line in question iterates over a synchronized List but synchronized list does not return a safe iterator.



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