[ https://issues.apache.org/jira/browse/NIFI-1780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Payne updated NIFI-1780: ----------------------------- Fix Version/s: 1.0.0 > 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 > > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)