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Posted to dev@couchdb.apache.org by "Adam Kocoloski (JIRA)" <ji...@apache.org> on 2010/06/15 03:45:13 UTC
[jira] Closed: (COUCHDB-761) Timeouts in couch_log are masked,
crashes callers
[ https://issues.apache.org/jira/browse/COUCHDB-761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adam Kocoloski closed COUCHDB-761.
----------------------------------
Resolution: Fixed
Good idea, Randall. I added the include_sasl to default.ini in trunk, but I don't think we necessarily need to backport it.
> Timeouts in couch_log are masked, crashes callers
> -------------------------------------------------
>
> Key: COUCHDB-761
> URL: https://issues.apache.org/jira/browse/COUCHDB-761
> Project: CouchDB
> Issue Type: Bug
> Components: Database Core
> Affects Versions: 0.10.1, 0.10.2, 0.11
> Reporter: Randall Leeds
> Priority: Blocker
> Fix For: 0.10.3, 0.11.1, 1.0
>
> Attachments: improved-sync-logging-v2.patch, improved-sync-logging.patch
>
>
> Several users have reported seeing crash reports stemming from a function_clause match on handle_info in various gen_servers. The offending message looks like {#Ref<>, <integer>}.
> After months of banter and sleuthing, I determined that the likely cause was a late reply to a gen_server:call that timed out, with the #Ref being the tag on the response. After it came up again today in IRC, kocolosk quickly discovered that the problem appears to be in couch_log.erl.
> The logging macros (?LOG_*) call couch_log/*_on which calls get_level_integer/0. When this call times out the timeout is eaten and a late reply arrives to the calling process later, triggering the crash.
> Suggestions on how to fix this welcome. Ideas so far are async logging or infinite timeout.
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