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https://issues.apache.org/jira/browse/NIFI-1780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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shivusondur updated NIFI-1780:
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Comment: was deleted
(was: @Mark Payne, )
> Investigate how we can tone down the ZooKeeper logs
> ---------------------------------------------------
>
> Key: NIFI-1780
> URL: https://issues.apache.org/jira/browse/NIFI-1780
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Fix For: 1.0.0, 1.0.0-Beta
>
>
> We've had a few people mention seeing logs like the following in the nifi app
> log:
> 2016-04-14 19:45:29,310 INFO [Framework Task Thread
> Thread-2-SendThread(localhost:2181)] org.apache.zookeeper.ClientCnxn Opening
> socket connection to server localhost/127.0.0.1:2181. Will not attempt to
> authenticate using SASL (unknown error)
> 2016-04-14 19:45:29,313 WARN [Framework Task Thread
> Thread-2-SendThread(localhost:2181)] org.apache.zookeeper.ClientCnxn Session
> 0x0 for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:1.8.0_45]
> at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
> ~[na:1.8.0_45]
> at
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
> ~[na:na]
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> ~[na:na]
> The first indicates that kerberos is not being used, but it sounds much
> scarier when it indicates "unknown error". The second is a legitimate concern
> that it is unable to connect, but it can be pretty concerning when it is
> repeated over and over in the logs. We should see if we can reduce the amount
> of logs generated here.
> There also some other places where Zookeeper logging is quite verbose, such
> as when a node running an embedded ZK server is disconnected from the cluster.
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