[jira] [Commented] (FLUME-2972) Handle offset migration in the new Kafka Channel

["Mike Percy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLUME-2972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15438159#comment-15438159 ] 

Mike Percy commented on FLUME-2972:
-----------------------------------

+1. I am going to commit the latest version from ReviewBoard.

> Handle offset migration in the new Kafka Channel
> ------------------------------------------------
>
>                 Key: FLUME-2972
>                 URL: https://issues.apache.org/jira/browse/FLUME-2972
>             Project: Flume
>          Issue Type: Bug
>          Components: Channel
>    Affects Versions: v1.7.0
>            Reporter: Grant Henke
>            Assignee: Grant Henke
>             Fix For: v1.7.0
>
>         Attachments: FLUME-2972-1.patch, FLUME-2972-2.patch, FLUME-2972.patch
>
>
> Offsets tracking the position in Kafka consumers  change from using zookeeper for offset storage to Kafka when moving from 0.8.x to 0.9.x. 
> FLUME-2823 makes the client change in the Kafka Channel but does not ensure existing offsets get migrated in order to continue consuming where it left off. 
> Flume should have some automated logic on startup to check if Kafka offsets exist, if not and migration is enabled (by default) then copy the offsets from Zookeeper and commit them to Kafka. 



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