[dev.icinga.com #1410] Race condition when issueing multiple reloads results in hanging IDO2DB processes

[icinga-migration]

This issue has been migrated from Redmine: https://dev.icinga.com/issues/1410

Created by tgelf on 2011-04-18 09:00:01 +00:00

Assignee: mfriedrich
Status: Resolved (closed on 2011-05-02 15:58:01 +00:00)
Target Version: 1.4
Last Update: 2011-05-02 15:58:01 +00:00 (in Redmine)

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There seems to be a race condition when sending SIGHIP to an Icinga process already busy with an ongoing reload. It's pretty easy to reproduce, just launch a few consecutive reloads. You will quickly remain with multiple ido2db childs and therefore be in trouble.

Attachments

• ido2db_pid5020_n_core_sighup.txt.tar.gz mfriedrich - 2011-04-28 10:40:36 +00:00

Changesets

2011-04-28 10:52:39 +00:00 by mfriedrich 39fa0ac

idoutils: non-blocking icinga core while config dump at startup to ido2db #866 fix race condition when issueing multiple reloads results in hanging IDO2DB processes #1410

check the issues for more information.
https://dev.icinga.org/issues/866
https://dev.icinga.org/issues/1410

refs #866
refs #1410

[icinga-migration]

Updated by mfriedrich on 2011-04-28 10:17:16 +00:00

• Status changed from New to Feedback
• Priority changed from High to Normal

a bit more feedback like debug logs would be much appreciated.

i've played around it, and added one for myself.

[icinga-migration]

Updated by mfriedrich on 2011-04-28 10:40:36 +00:00

• File added ido2db_pid5020_n_core_sighup.txt.tar.gz

[icinga-migration]

Updated by mfriedrich on 2011-04-28 10:52:07 +00:00

• Assigned to set to mfriedrich
• Target Version set to 1.4
• Done % changed from 0 to 60

ok, fixed that within the commit for #866 when rewriting the dynamic buffer to a worker thread in ido2db, not blocking the core anymore.

that commit is running in a productive environment by a user, so i consider a bit more cpu usage in the first place a good achievement for fixing this issue and resolving #866

[icinga-migration]

Updated by mfriedrich on 2011-04-28 20:29:10 +00:00

• Done % changed from 60 to 100

[icinga-migration]

Updated by mfriedrich on 2011-05-02 15:58:01 +00:00

• Category set to Other
• Status changed from Feedback to Resolved