Jun, I see that line elsewhere in the cluster. I don't see it happening on that particular broker that ran into the problem.
On Mon, Mar 6, 2017 at 5:02 PM, Jun Rao (JIRA) <j...@apache.org> wrote: > > [ https://issues.apache.org/jira/browse/KAFKA-2729?page= > com.atlassian.jira.plugin.system.issuetabpanels:comment- > tabpanel&focusedCommentId=15898415#comment-15898415 ] > > Jun Rao commented on KAFKA-2729: > -------------------------------- > > [~mjuarez], did you see ZK session expiration in the server.log in the > controller around that time? The log will look like the following. > > INFO zookeeper state changed (Expired) (org.I0Itec.zkclient.ZkClient) > > > Cached zkVersion not equal to that in zookeeper, broker not recovering. > > ----------------------------------------------------------------------- > > > > Key: KAFKA-2729 > > URL: https://issues.apache.org/jira/browse/KAFKA-2729 > > Project: Kafka > > Issue Type: Bug > > Affects Versions: 0.8.2.1 > > Reporter: Danil Serdyuchenko > > > > After a small network wobble where zookeeper nodes couldn't reach each > other, we started seeing a large number of undereplicated partitions. The > zookeeper cluster recovered, however we continued to see a large number of > undereplicated partitions. Two brokers in the kafka cluster were showing > this in the logs: > > {code} > > [2015-10-27 11:36:00,888] INFO Partition > > [__samza_checkpoint_event-creation_1,3] > on broker 5: Shrinking ISR for partition > [__samza_checkpoint_event-creation_1,3] > from 6,5 to 5 (kafka.cluster.Partition) > > [2015-10-27 11:36:00,891] INFO Partition > > [__samza_checkpoint_event-creation_1,3] > on broker 5: Cached zkVersion [66] not equal to that in zookeeper, skip > updating ISR (kafka.cluster.Partition) > > {code} > > For all of the topics on the effected brokers. Both brokers only > recovered after a restart. Our own investigation yielded nothing, I was > hoping you could shed some light on this issue. Possibly if it's related > to: https://issues.apache.org/jira/browse/KAFKA-1382 , however we're > using 0.8.2.1. > > > > -- > This message was sent by Atlassian JIRA > (v6.3.15#6346) >
