[jira] [Commented] (KAFKA-1300) Added WaitForReplaction admin tool.

["Guozhang Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-1300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122023#comment-14122023 ] 

Guozhang Wang commented on KAFKA-1300:
--------------------------------------

Moving out of 0.8.2 as for now.

> Added WaitForReplaction admin tool.
> -----------------------------------
>
>                 Key: KAFKA-1300
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1300
>             Project: Kafka
>          Issue Type: New Feature
>          Components: tools
>    Affects Versions: 0.8.0
>         Environment: Ubuntu 12.04
>            Reporter: Brenden Matthews
>              Labels: patch
>             Fix For: 0.9.0
>
>         Attachments: 0001-Added-WaitForReplaction-admin-tool.patch
>
>
> I have created a tool similar to the broker shutdown tool for doing rolling restarts of Kafka clusters.
> The tool watches the max replica lag of the specified broker, and waits until the lag drops to 0 before exiting.
> To do a rolling restart, here's the process we use:
> for (broker <- brokers) {
>   run shutdown tool for broker
>   terminate broker
>   start new broker
>   run wait for replication tool on new broker
> }
> Here's an example command line use:
> ./kafka-run-class.sh kafka.admin.WaitForReplication --zookeeper zk.host.com:2181 --num.retries 100 --retry.interval.ms 60000 --broker 0



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