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https://issues.apache.org/jira/browse/KAFKA-2106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14510614#comment-14510614
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chenshangan commented on KAFKA-2106:
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When adding new brokers to the cluster, existing replica assignment should be
reassigned to get better distribution. The basic though is to reassign the
topic in the new cluster while starting at the original broker starting index,
the process is like rehash the existing data.
> Partition balance tool between borkers
> --------------------------------------
>
> Key: KAFKA-2106
> URL: https://issues.apache.org/jira/browse/KAFKA-2106
> Project: Kafka
> Issue Type: New Feature
> Components: admin
> Affects Versions: 0.8.3
> Reporter: chenshangan
>
> The default partition assignment algorithm can work well in a static kafka
> cluster(number of brokers seldom change). Actually, in production env, number
> of brokers is always increasing according to the business data. When new
> brokers added to the cluster, it's better to provide a tool that can help to
> move existing data to new brokers. Currently, users need to choose topic or
> partitions manually and use the Reassign Partitions Tool
> (kafka-reassign-partitions.sh) to achieve the goal. It's a time-consuming
> task when there's a lot of topics in the cluster.
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