[jira] [Created] (KAFKA-9872) After restart kafka by a abnormal way，kafkaconsumer cannot read messages

["Lee chen (Jira)" <ji...@apache.org>]

Lee chen created KAFKA-9872:
-------------------------------

             Summary: After  restart kafka by a  abnormal way，kafkaconsumer cannot read messages
                 Key: KAFKA-9872
                 URL: https://issues.apache.org/jira/browse/KAFKA-9872
             Project: Kafka
          Issue Type: Bug
          Components: core
    Affects Versions: 1.1.0
            Reporter: Lee chen


Recently, I face a problem of a broker  restart  by server shutdown directly. when I restart the broker, I found my consumer cannot read data. 
1,My consumer group named "0",and The partitions of  __consumer_offsets is 50.
2,As the Calculation results of kafka. The partition of  consumer "0" is  in  partition-48
3, kafkaConsumer belong to consumer group “0”  cannot  read datas ，but when I change to another group which not in partition-48, all consumers are back to normal.It seems that* the log dir of partition-48 belong to __consumer_offsets is  damaged*.
4,When I  check the  log dir of __consumer_offsets-48，I* found so many  .snap files. *
5,I found the nummber recorded  in latest log file in __consumer_offsets-48  is smaller than the nummber recorded  in recovery-point-offset-checkpoint and replication-offset-checkpoint
6,I use  kafka-topics.sh to describe __consumer_offsets is normal,All replica is be contained in ISR.

As my understanding，If log dir is damaged， the broker may be cannot restart. 





--
This message was sent by Atlassian Jira
(v8.3.4#803005)