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Posted to notifications@accumulo.apache.org by GitBox <gi...@apache.org> on 2020/11/20 18:47:38 UTC

[GitHub] [accumulo] jmark99 opened a new issue #1800: Examine new error seen with use of ZooKeeper 3.5.8

jmark99 opened a new issue #1800:
URL: https://github.com/apache/accumulo/issues/1800


   Since changing the ZK version to 3.5.8 a new error has been appearing in the logs. 
   
   <pre>
   2020-11-20T10:40:02,189 [tracer.ZooTraceClient] ERROR: unable to get destination hosts in zookeeper
   org.apache.accumulo.fate.zookeeper.ZooSession$ZooSessionShutdownException: The Accumulo singleton that that tracks zookeeper session is disabled.  This is likely caused by all AccumuloClients being closed or garbage collected.
           at org.apache.accumulo.fate.zookeeper.ZooSession.getSession(ZooSession.java:196) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooSession.getAnonymousSession(ZooSession.java:189) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooReader.getZooKeeper(ZooReader.java:57) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooReader.retryLoopMutator(ZooReader.java:165) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooReader.retryLoop(ZooReader.java:144) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooReader.retryLoop(ZooReader.java:131) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.fate.zookeeper.ZooReader.getStatus(ZooReader.java:78) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT] 
           at org.apache.accumulo.fate.zookeeper.ZooReader.exists(ZooReader.java:96) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]                                           
           at org.apache.accumulo.tracer.ZooTraceClient.updateHostsFromZooKeeper(ZooTraceClient.java:134) ~[accumulo-tracer-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.accumulo.tracer.ZooTraceClient.process(ZooTraceClient.java:102) [accumulo-tracer-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
           at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:535) [zookeeper-3.5.8.jar:3.5.8]
           at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510) [zookeeper-3.5.8.jar:3.5.8]
   </pre>
   
   I have observed the issue while going through several different accumulo examples from the Accumulo-Example repo. It can be seen while running some IT tests as well. In particular, running the ShellIT#insertDeleteScanTest appears to consitently throw the exception. 
   
   The error should be examined to determine if it is a cause for alarm. It has not appeared to cause any issues as of yet, but if it could be understood and resolved that would be preferred.


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[GitHub] [accumulo] ctubbsii closed issue #1800: Examine new error seen with use of ZooKeeper 3.5.8

Posted by GitBox <gi...@apache.org>.
ctubbsii closed issue #1800:
URL: https://github.com/apache/accumulo/issues/1800


   


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