Github user HeartSaVioR commented on the pull request:
https://github.com/apache/storm/pull/305#issuecomment-61453891
@dashengju
Yes, ShellSpout/Bolt read stderr from subprocess after sending tuple
immediately.
I'm afraid that this may cannot cover all cases, and ShellBolt could read
stderr message after sending "next" tuple if PythonBolt doesn't write stderr
immediately.
Please remember ShellBolt has no "sync". It just send a message and forget,
and doesn't wait for
PythonBolt if it has any stderr message regarding that tuple.
Btw, it's not related to current PR. It's just my 2 cents, so take your
time.
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