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Posted to dev@storm.apache.org by caofangkun <gi...@git.apache.org> on 2016/01/26 09:08:24 UTC
[GitHub] storm pull request: [STORM-1501] launch worker process exception w...
GitHub user caofangkun opened a pull request:
https://github.com/apache/storm/pull/1046
[STORM-1501] launch worker process exception will cause supervisor process exited
[util.clj/async-loop](https://github.com/apache/storm/blob/master/storm-core/src/clj/org/apache/storm/util.clj#L474) default kill-fn will kill current process
when supervisor use [util.clj/launch-process](https://github.com/apache/storm/blob/master/storm-core/src/clj/org/apache/storm/util.clj#L546) to launch worker process , if exeception occurs , supervisor process will exit.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/caofangkun/apache-storm storm-1501-1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/storm/pull/1046.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1046
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commit 21ef59cadbe4204a0152cef5cf58dffcd928a469
Author: caofangkun <ca...@gmail.com>
Date: 2016-01-26T08:04:53Z
[STORM-1501] launch worker process exception will cause supervisor process exited
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[GitHub] storm pull request: [STORM-1501] launch worker process exception w...
Posted by revans2 <gi...@git.apache.org>.
Github user revans2 commented on the pull request:
https://github.com/apache/storm/pull/1046#issuecomment-175125963
I am a bit curious why we need this? What exception/error did you see come from the worker process?
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[GitHub] storm pull request #1046: [STORM-1501] launch worker process exception will ...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/storm/pull/1046
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[GitHub] storm pull request: [STORM-1501] launch worker process exception w...
Posted by revans2 <gi...@git.apache.org>.
Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1046#discussion_r50867596
--- Diff: storm-core/src/clj/org/apache/storm/util.clj ---
@@ -553,7 +553,8 @@
(catch InterruptedException e
(log-message log-prefix " interrupted.")))
(exit-code-callback (.exitValue process)))
- nil)))
+ nil)
+ :kill-fn (fn [error] (log-error (RuntimeException. ("launch process failed..."))))))
--- End diff --
Why are we throwing away error?
What happens if this does not exit? I assume that the heartbeat monitoring will detect it and do the right thing, but are there other places in the code besides a worker process that we use this? Will there be problems especially around the exit-code-callback if they are not called?
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