Replication warnings - worrysome?

[Christian Goetze]

I see the following in my logs - is this something to worry about? (running 2.9.1)

[2014-11-18 10:32:55,354] INFO  com.googlesource.gerrit.plugins.replication.ReplicationQueue : Push to gerrit2@<slave-host>:/data/gerrit/review_site/git/codebase.git references: [RemoteRefUpdate[remoteName=refs/heads/master, NOT_ATTEMPTED, (null)...d136f53722e9e2b119218e6a53727391ce904a26, srcRef=refs/heads/master, message=null], RemoteRefUpdate[remoteName=refs/notes/review, NOT_ATTEMPTED, (null)...5b37e9adfaabb37c14388df6089b4f6925cdced5, srcRef=refs/notes/review, message=null]]
[2014-11-18 10:33:01,475] WARN  com.google.gerrit.sshd.GerritServerSession : Exception caught
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:197)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:273)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:44)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:690)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:664)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:653)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$600(AbstractPollingIoProcessor.java:67)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1124)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
[2014-11-18 10:33:12,005] INFO  com.googlesource.gerrit.plugins.replication.ReplicationQueue : Push to gerrit2@<slave-host>:/data/gerrit/review_site/git/codebase.git references: [RemoteRefUpdate[remoteName=refs/changes/54/30954/1, NOT_ATTEMPTED, (null)...baedd655e7d46b3cac14af2dad3adf149ecc095c, srcRef=refs/changes/54/30954/1, message=null]]

[Doug Kelly]

The INFO lines are harmless; they're simply telling you that replication has succeeded.  In fact, that's what sparked https://groups.google.com/d/msg/repo-discuss/m0h-SYlGftQ/peKsDlWleJQJ

In the end, I found these messages useful, so I've not stripped them out yet, and instead filter in Kibana (using logstash with elasticsearch and kibana to visualize the results gives me a much more meaningful way to read logs).  With the replication messages, I can tell if an issue is related to CI or Gerrit replication. If you want, you can still reconfigure log4j the hard way.  A starting place (my log4j.properties) is available at:

https://gist.github.com/vangdfang/686b10d514ce7a4bd6a5

The connection reset warning above appears to be unrelated.

--Doug