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https://issues.apache.org/jira/browse/STORM-2647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Priyank Shah reassigned STORM-2647:
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Assignee: Priyank Shah
> Reduce Number of Threads running in the Worker
> ----------------------------------------------
>
> Key: STORM-2647
> URL: https://issues.apache.org/jira/browse/STORM-2647
> Project: Apache Storm
> Issue Type: Sub-task
> Components: storm-core
> Reporter: Roshan Naik
> Assignee: Priyank Shah
>
> Below is an account of all the threads in a single worker running a topology
> with 1 spout instance, 1 bolt instance, and 1 acker bolt instance. Topology
> debugging feature was disabled as it brings in additional threads.
> Total 34 threads:
> 10 timer threads
> 2 Curator threads
> 2 ZooKeeper threads
> 4 Netty threads
> 7 Disruptor thread
> 1 Spout executor thread
> 2 worker thread
> 1 Back Pressure thread
> 4 thread - unclear what these are
> 1 Finalizer thread
> - Would be good to collapse the Timer threads into
> SingleThreadScheduledExecutor.
> - We have 4 threads to communicate with ZK (2curator + 2ZK). If necessary can
> we eliminate curator to accomplish that ?
> - Similarly see if we can reduce the number of Netty threads.
> - How many threads does topology debugging need, can we reduce that ?
> - The Back pressure and Disruptor threads will be reduced by STORM-2306
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