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https://issues.apache.org/jira/browse/FLINK-28078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554963#comment-17554963
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Chesnay Schepler commented on FLINK-28078:
------------------------------------------
We seem to be entering a strange loop. The ZK log show the following over and
over again; the final number inf the getData calls is incremented on each loop.
{code}
FinalRequestProcessor - Processing request:: sessionid:0x100cf6d9cf60000
type:getData cxid:0x20 zxid:0xfffffffffffffffe txntype:unknown
reqpath:/flink/default/latch/_c_ddb7327c-1775-4084-9fbd-40e263758697-latch-0000000000
FinalRequestProcessor - sessionid:0x100cf6d9cf60000 type:getData cxid:0x20
zxid:0xfffffffffffffffe txntype:unknown
reqpath:/flink/default/latch/_c_ddb7327c-1775-4084-9fbd-40e263758697-latch-0000000000
FinalRequestProcessor - Processing request:: sessionid:0x100cf6d9cf60000
type:getChildren2 cxid:0x21 zxid:0xfffffffffffffffe txntype:unknown
reqpath:/flink/default/latch
FinalRequestProcessor - sessionid:0x100cf6d9cf60000 type:getChildren2 cxid:0x21
zxid:0xfffffffffffffffe txntype:unknown reqpath:/flink/default/latch
FinalRequestProcessor - Processing request:: sessionid:0x100cf6d9cf60000
type:delete cxid:0x22 zxid:0xc txntype:2 reqpath:n/a
FinalRequestProcessor - sessionid:0x100cf6d9cf60000 type:delete cxid:0x22
zxid:0xc txntype:2 reqpath:n/a
FinalRequestProcessor - Processing request:: sessionid:0x100cf6d9cf60000
type:create2 cxid:0x23 zxid:0xd txntype:15 reqpath:n/a
FinalRequestProcessor - sessionid:0x100cf6d9cf60000 type:create2 cxid:0x23
zxid:0xd txntype:15 reqpath:n/a
{code}
> ZooKeeperMultipleComponentLeaderElectionDriverTest.testLeaderElectionWithMultipleDrivers
> runs into timeout
> ----------------------------------------------------------------------------------------------------------
>
> Key: FLINK-28078
> URL: https://issues.apache.org/jira/browse/FLINK-28078
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.16.0
> Reporter: Matthias Pohl
> Priority: Major
> Labels: test-stability
>
> [Build
> #36189|https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=36189&view=logs&j=0da23115-68bb-5dcd-192c-bd4c8adebde1&t=24c3384f-1bcb-57b3-224f-51bf973bbee8&l=10455]
> got stuck in
> {{ZooKeeperMultipleComponentLeaderElectionDriverTest.testLeaderElectionWithMultipleDrivers}}
> {code}
> "ForkJoinPool-45-worker-25" #525 daemon prio=5 os_prio=0
> tid=0x00007fc74d9e3800 nid=0x62c8 waiting on condition [0x00007fc6ff2f2000]
> May 30 16:36:10 java.lang.Thread.State: WAITING (parking)
> May 30 16:36:10 at sun.misc.Unsafe.park(Native Method)
> May 30 16:36:10 - parking to wait for <0x00000000c2571b80> (a
> java.util.concurrent.CompletableFuture$Signaller)
> May 30 16:36:10 at
> java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> May 30 16:36:10 at
> java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1707)
> May 30 16:36:10 at
> java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3313)
> May 30 16:36:10 at
> java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1742)
> May 30 16:36:10 at
> java.util.concurrent.CompletableFuture.join(CompletableFuture.java:1947)
> May 30 16:36:10 at
> org.apache.flink.runtime.leaderelection.ZooKeeperMultipleComponentLeaderElectionDriverTest.testLeaderElectionWithMultipleDrivers(ZooKeeperMultipleComponentLeaderElectionDriverTest.java:256)
> May 30 16:36:10 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> May 30 16:36:10 at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> May 30 16:36:10 at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> May 30 16:36:10 at java.lang.reflect.Method.invoke(Method.java:498)
> [...]
> {code}
>
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