[jira] [Created] (GEODE-5728) Suspect string (NullPointerException) found in LocatorDUnitTest.testStartTwoLocators

["Kenneth Howe (JIRA)" <ji...@apache.org>]

Kenneth Howe created GEODE-5728:
-----------------------------------

             Summary: Suspect string (NullPointerException) found in LocatorDUnitTest.testStartTwoLocators
                 Key: GEODE-5728
                 URL: https://issues.apache.org/jira/browse/GEODE-5728
             Project: Geode
          Issue Type: Bug
          Components: swat
            Reporter: Kenneth Howe


DistributedTest failure in https://concourse.apachegeode-ci.info/teams/main/pipelines/develop/jobs/DistributedTest/builds/379

{code}
java.lang.AssertionError: Suspicious strings were written to the log during this run.
Fix the strings or use IgnoredException.addIgnoredException to ignore.
-----------------------------------------------------------------------
Found suspect string in log4j at line 1241

[fatal 2018/09/11 00:04:32.409 UTC <locator request thread[1]> tid=0x676] Exception in processing request from 172.17.0.20
java.lang.NullPointerException
	at org.apache.geode.distributed.internal.membership.gms.locator.GMSLocator.processFindCoordinatorRequest(GMSLocator.java:309)
	at org.apache.geode.distributed.internal.membership.gms.locator.GMSLocator.processRequest(GMSLocator.java:205)
	at org.apache.geode.distributed.internal.InternalLocator$PrimaryHandler.processRequest(InternalLocator.java:1194)
	at org.apache.geode.distributed.internal.tcpserver.TcpServer.processOneConnection(TcpServer.java:484)
	at org.apache.geode.distributed.internal.tcpserver.TcpServer.lambda$processRequest$0(TcpServer.java:378)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
{code}

The test doesn't have a history of (flaky) failures that I've discovered, and I haven't gotten it to fail locally.

The NPE comes from a null return from {{v.getCoordinator()}}.
{code}
    synchronized (registrants) {
      if (isCoordinator) {
        coordinator = localAddress;

        if (v != null && !v.getCoordinator().equals(localAddress)) {
          logger.info("This member is becoming coordinator since view {}", v);
          v = null;
        }
      }
{code}




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