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From "Lars Volker (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-4737: Prevent SIGUSR1 from killing daemons when minidumps are disabled
Date Fri, 11 Aug 2017 17:42:59 GMT
Lars Volker has posted comments on this change.

Change subject: IMPALA-4737: Prevent SIGUSR1 from killing daemons when minidumps are disabled
......................................................................


Patch Set 2:

> Should any startup scripts be modified to trap '' SIGUSR1 before
 > launching the daemons since there is still technically a race from
 > daemon startup to when the mini-dump signal handler is registered?
 > (Though from what I can tell the typical usage of the SIGUSR1
 > mini-dump handler would very likely never encounter this race, so
 > maybe not worth fixing?)

Yes, that race exists, I don't think it's worth fixing though. Human operators should not
hit it. Automated scripts that regularly trigger minidumps sending SIGUSR1 could hit this,
but I think we should not encourage those anyways. Let me know if you feel strongly about
this.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I13d866a2eec832500131954a7f693c33585ea51e
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Lars Volker <lv@cloudera.com>
Gerrit-Reviewer: John Sherman <jfs@arcadiadata.com>
Gerrit-Reviewer: Lars Volker <lv@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sailesh@cloudera.com>
Gerrit-HasComments: No

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