Jie Tong created KAFKA-1504:
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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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