I was just playing around with the RC2 of 0.8.2 and noticed that if I
shutdown zookeeper first I can't shutdown Kafka server at all since it
goes into a never ending attempt to reconnect with zookeeper. I had to
kill the Kafka process to stop it. I tried it against trunk too and
there too I see the same issue. Should I file a JIRA for this and see if
I can come up with a patch?
FWIW, here's the unending (and IMO too frequent) attempts at trying to
reconnect. I've a thread dump too which shows that the other thread
which is trying to complete a controlled shutdown of Kafka is blocked
forever for the zookeeper to be up. I can attach it to the JIRA.
2015-01-24 10:15:46,278] WARN Session 0x14b1a4136800000 for server null,
unexpected error, closing socket connection and attempting reconnect
(org.apache.zookeeper.ClientCnxn)
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
[2015-01-24 10:15:47,437] INFO Opening socket connection to server
localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL
(unknown error) (org.apache.zookeeper.ClientCnxn)
[2015-01-24 10:15:47,438] WARN Session 0x14b1a4136800000 for server
null, unexpected error, closing socket connection and attempting
reconnect (org.apache.zookeeper.ClientCnxn)
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
[2015-01-24 10:15:49,056] INFO Opening socket connection to server
localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL
(unknown error) (org.apache.zookeeper.ClientCnxn)
[2015-01-24 10:15:49,057] WARN Session 0x14b1a4136800000 for server
null, unexpected error, closing socket connection and attempting
reconnect (org.apache.zookeeper.ClientCnxn)
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
[2015-01-24 10:15:50,801] INFO Opening socket connection to server
localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL
(unknown error) (org.apache.zookeeper.ClientCnxn)
[2015-01-24 10:15:50,802] WARN Session 0x14b1a4136800000 for server
null, unexpected error, closing socket connection and attempting
reconnect (org.apache.zookeeper.ClientCnxn)
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
-Jaikiran
