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Posted to commits@samza.apache.org by "Jagadish (JIRA)" <ji...@apache.org> on 2018/04/04 18:44:00 UTC

[jira] [Created] (SAMZA-1635) Usage of AsyncRunLoop with threadpool size = 1 results in slowness

Jagadish created SAMZA-1635:
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             Summary: Usage of AsyncRunLoop with threadpool size = 1 results in slowness
                 Key: SAMZA-1635
                 URL: https://issues.apache.org/jira/browse/SAMZA-1635
             Project: Samza
          Issue Type: Bug
            Reporter: Jagadish
            Assignee: Xinyu Liu


When using a threadpool of size one with Samza's AsyncRunLoop, a lot of process-time is wasted in simply submitting tasks to the hand-off queue in the executor. We should evaluate if there are actual use-cases of using AsyncRunLoop with a single-threaded executor. If we determine that there are none, we should fallback to the sync-run-loop instead. Additionally, it would be nice to warn users when they use a single-threaded executor + AsyncRunLoop



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