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From Kanak Biscuitwala <kana...@hotmail.com>
Subject Partition assigner that takes current assignment into account
Date Tue, 02 Aug 2016 03:46:48 GMT
Hi,



I wanted to highlight an alternative algorithm that we have written to generate JSON compatible
with kafka-reassign-partitions.sh. It's novel for the following reasons:



- Like the existing algorithm, it's rack-aware, balances partitions assigned to hosts, and
number of leader replicas on each host


- Unlike the existing algorithm, it takes the current assignment into account to minimize
data movement


- Because of the above property, it works well for decommissioning or replacing nodes, as
well as adding new nodes, and taking only a subset of partitions away from existing nodes.



Take a look: https://github.com/SiftScience/kafka-assigner


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