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https://issues.apache.org/jira/browse/KAFKA-2727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-2727.
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Resolution: Fixed
Fix Version/s: 0.9.0.0
Issue resolved by pull request 411
[https://github.com/apache/kafka/pull/411]
> initialize only the part of the topology relevant to the task
> -------------------------------------------------------------
>
> Key: KAFKA-2727
> URL: https://issues.apache.org/jira/browse/KAFKA-2727
> Project: Kafka
> Issue Type: Sub-task
> Components: kafka streams
> Affects Versions: 0.9.0.0
> Reporter: Yasuhiro Matsuda
> Assignee: Yasuhiro Matsuda
> Fix For: 0.9.0.0
>
>
> Currently each streaming task initializes the entire topology regardless of
> the assigned topic-partitions. This is wasteful especially when the topology
> has local state stores. All local state stores are restored from their change
> log topics even when are not actually used in the task execution. To fix
> this, the task initialization should be aware of the relevant subgraph of the
> topology and initializes only processors and state stores in the subgraph.
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