[jira] [Created] (KAFKA-1504) Replica is unable to update ISR

["Jie Tong (JIRA)" <ji...@apache.org>]

Jie Tong created KAFKA-1504:
-------------------------------

             Summary: Replica is unable to update ISR
                 Key: KAFKA-1504
                 URL: https://issues.apache.org/jira/browse/KAFKA-1504
             Project: Kafka
          Issue Type: Bug
          Components: controller
    Affects Versions: 0.8.1
         Environment: Windows Server 2012; JDK 1.7.0
            Reporter: Jie Tong
            Assignee: Neha Narkhede


We ran into this issue relatively frequent: replica cannot update ISR and thus fall out of the ISR and result in the # of replicas in ISR < replication factor. A restart of broker can mitigate the issue.

Below is the error log:

e,06/22/2014 20:29:20,Logging,kafka.utils.Logging$class,SrcFile="Logging.scala" SrcFunc="error" SrcLine="97" Pid="1952" Tid="8852" TS="0x01CF8E935200FDAF" String1="Conditional update of path /brokers/topics/RTUserCount/partitions/60/state with data {'controller_epoch':44,'leader':3690877,'version':1,'leader_epoch':110,'isr':[3690877]} and expected version 230 failed due to org.apache.zookeeper.KeeperException$BadVersionException: KeeperErrorCode = BadVersion for /brokers/topics/RTUserCount/partitions/60/state"
i,06/22/2014 20:29:20,Logging,kafka.utils.Logging$class,SrcFile="Logging.scala" SrcFunc="info" SrcLine="68" Pid="1952" Tid="8852" TS="0x01CF8E93520124BC" String1="Partition [RTUserCount,60] on broker 3690877: Cached zkVersion [230] not equal to that in zookeeper, skip updating ISR"




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