[jira] [Created] (HIVE-5670) annoying ZK exceptions are annoying

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

Sergey Shelukhin created HIVE-5670:
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             Summary: annoying ZK exceptions are annoying
                 Key: HIVE-5670
                 URL: https://issues.apache.org/jira/browse/HIVE-5670
             Project: Hive
          Issue Type: Task
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin
            Priority: Minor


when I run tests locally (or on cluster IIRC) there are bunch of ZK-related exceptions in Hive log, such as
{noformat}
2013-10-28 09:50:50,851 ERROR zookeeper.ClientCnxn (ClientCnxn.java:processEvent(523)) - Error while calling watcher 
java.lang.NullPointerException
   at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:521)
   at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:497)
   
   2013-10-28 09:51:05,747 DEBUG server.NIOServerCnxn (NIOServerCnxn.java:closeSock(1024)) - ignoring exception during input shutdown
java.net.SocketException: Socket is not connected
   at sun.nio.ch.SocketChannelImpl.shutdown(Native Method)
   at sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:633)
   at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
   at org.apache.zookeeper.server.NIOServerCnxn.closeSock(NIOServerCnxn.java:1020)
   at org.apache.zookeeper.server.NIOServerCnxn.close(NIOServerCnxn.java:977)
   at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:347)
   at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:224)
   at java.lang.Thread.run(Thread.java:680)
{noformat}

They are annoying when you look for actual problems in logs.

Those on DEBUG level should be silenced via log levels for ZK classes by default. Not sure what to do with ERROR level one(s?), I'd need to look if they can be silenced/logged as DEBUG on hive side, or maybe file a bug for ZK...



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