Jungtaek Lim created STORM-2678:
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Summary: Improve performance of LoadAwareShuffleGrouping
Key: STORM-2678
URL: https://issues.apache.org/jira/browse/STORM-2678
Project: Apache Storm
Issue Type: Bug
Components: storm-client
Reporter: Jungtaek Lim
Assignee: Jungtaek Lim
While reviewing STORM-2306, I found a room to improve LoadAwareShuffleGrouping,
basically taking similar approach with ShuffleGrouping.
The idea is constructing virtual ring (array) with proper length which tasks
are randomly distributed to the ring respecting their loads, and just do
sequential access like we do in ShuffleGrouping. Maybe slower to reflect load
information due to construct virtual ring but no need to call randInt and
additional loop for each tuple emission.
We may also want to reduce call of System.currentTimeMillis(), and if we get
rid of that, it should be better.
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