[jira] [Created] (RATIS-1657) Intermittent failure in TestLogAppenderWithGrpc#testPendingLimits due to ConcurrentModificationException at SlidingWindow$Client.trySendDelayed

["Attila Doroszlai (Jira)" <ji...@apache.org>]

Attila Doroszlai created RATIS-1657:
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             Summary: Intermittent failure in TestLogAppenderWithGrpc#testPendingLimits due to ConcurrentModificationException at SlidingWindow$Client.trySendDelayed
                 Key: RATIS-1657
                 URL: https://issues.apache.org/jira/browse/RATIS-1657
             Project: Ratis
          Issue Type: Bug
            Reporter: Attila Doroszlai
         Attachments: org.apache.ratis.grpc.TestLogAppenderWithGrpc-output.txt, org.apache.ratis.grpc.TestLogAppenderWithGrpc.txt

{code:title=https://github.com/apache/ratis/runs/7640279593?check_suite_focus=true#step:5:552}
Tests run: 10, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 30.222 s <<< FAILURE! - in org.apache.ratis.grpc.TestLogAppenderWithGrpc
testPendingLimits[0](org.apache.ratis.grpc.TestLogAppenderWithGrpc)  Time elapsed: 6.874 s  <<< ERROR!
java.util.concurrent.CompletionException: org.apache.ratis.protocol.exceptions.AlreadyClosedException: SlidingWindow$Client:client-920847F5D7C6->RAFT is closed.
...
Caused by: java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1211)
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1265)
	at org.apache.ratis.util.SlidingWindow$Client.trySendDelayed(SlidingWindow.java:330)
	at org.apache.ratis.util.SlidingWindow$Client.receiveReply(SlidingWindow.java:323)
	at org.apache.ratis.client.impl.OrderedAsync.lambda$sendRequest$9(OrderedAsync.java:248)
{code}



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