[jira] [Commented] (KAFKA-7234) Allow auto leader rebalance during partition reassignment

["Richard Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-7234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722598#comment-16722598 ] 

Richard Yu commented on KAFKA-7234:
-----------------------------------

This might be a corner case, but if several nodes are brought into the cluster in rapid succession, then we probably wouldn't want to rebalance every single time a node is added. We should artificially trigger a rebalance once every set block of time if necessary. 

> Allow auto leader rebalance during partition reassignment
> ---------------------------------------------------------
>
>                 Key: KAFKA-7234
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7234
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Jason Gustafson
>            Priority: Major
>
> We currently skip auto leader balancing while a reassignment is in progress. However, when bringing new nodes into the cluster, you actually want the leaders to rebalance as soon as possible so that the new nodes can begin doing work. In general, having better balance in the cluster seems like it would be better for the reassignment, but perhaps there is a good reason to skip it?



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