CouchDB crashes by Erlang Heartbeat Runtime System
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Key: COUCHDB-1052
URL: https://issues.apache.org/jira/browse/COUCHDB-1052
Project: CouchDB
Issue Type: Improvement
Components: Infrastructure
Affects Versions: 1.0.1, 0.10.1
Environment: Solaris 10
Reporter: Nicolas Maupu
Hello,
We have several couchdb in our production environment (starting from 0.10.1 and
upgraded to 1.0.1). Some instances began to crash several times a day.
After research (I am not aware of all erlang tips and tricks), I found that the
problem was caused by erlang heartbeat runtime system
(http://www.erlang.org/doc/man/heart.html).
For some reasons (it seems to be a problem with system clock), this heartbeat
process sends a signal to main erlang process to trigger HEARTBEAT_COMMAND.
The command configured by couchdb startup script is to call 'bin/couchdb -k'
which kill server ...
I don't know if this is wanted or not but is Erlang heartbeat system provided
to restart a service if this one crash ?
I patched mine to restart process gracefully but I would like to know if this
is a feature or a bug : next time I upgrade, I will have to patch again.
My patch is a little bit specific to my architecture so I did not provide it.
Ask me if you are interested.
nm.
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