[jira] [Updated] (KAFKA-4150) Facing Message Loss When trying rolling updates

["Ismael Juma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-4150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismael Juma updated KAFKA-4150:
-------------------------------
    Labels: reliability  (was: )

> Facing Message Loss When trying rolling updates
> -----------------------------------------------
>
>                 Key: KAFKA-4150
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4150
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.1
>            Reporter: Avanish Pandey
>              Labels: reliability
>
> Hi ,
> I am trying to see the settings that I can keep for my kafka cluster.
> The settings I'am trying are:
> replication-factor = 3
> min.insync.replicas = 2
> num of brokers = 3
> Scenario:
> Bring broker1 down.
> Bring it back up.
> Bring broker 2 down.
> Bring it back up.
> Bring broker 3 down.
> Bring it back up.
> There is a delay of at least 1-2 minutes in between the brokers being stopped.
> Other configs:
> zookeeper.session.timeout.ms=10000
> num.partitions=6
> min.insync.replicas=2
> log.retention.ms=172800000
> message.max.bytes=1000000
> log.flush.interval.ms=5000
> log.flush.offset.checkpoint.interval.ms=5000
> log.roll.hours=24
> zookeeper.session.timeout.ms=1000
> leader.imbalance.check.interval.seconds=60
> unclean.leader.election.enable=false
> What I am seeing is variable number of messages lost. Where as , when i don't bring kafka down, or just bring 1 broker down and back up, everything is fine.
> Could you let me know if there is some setting which is wrong or needs correction.



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