Roshan Naik created STORM-2647:
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Summary: 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
Reporter: Roshan Naik
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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