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https://issues.apache.org/jira/browse/COUCHDB-397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725704#action_12725704
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Adam Kocoloski commented on COUCHDB-397:
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Hi Paul, I tried terminating all secondary services, but it ended up getting a
bit complicated. couch_httpd is one of those services, so we end up shutting
down the connection that accepted the request. I tried to work around this by
spawning a fun to trigger the restart. This allowed me to respond to the
request to _restart, but the test suite still ran into problems because modern
browsers will make multiple connections to the CouchDB server in order to run
the tests.
I think we can develop a graceful shutdown procedure that closes all
connections appropriately and and restarts things, but in the interests of
getting 0.9.1 out the door I just changed restart_core_server() to explicitly
restart the stats processes.
> POST _restart only restarts couch_server process
> ------------------------------------------------
>
> Key: COUCHDB-397
> URL: https://issues.apache.org/jira/browse/COUCHDB-397
> Project: CouchDB
> Issue Type: Bug
> Affects Versions: 0.9
> Reporter: Adam Kocoloski
> Assignee: Adam Kocoloski
>
> Perhaps this is by design, but POSTing to /_restart only restarts the
> couch_server process. It does not restart any of the other myriad processes
> CouchDB relies on for operation. In particular, this causes the stats test
> suite to occasionally fail, because the stats counters do not get reset. The
> test that fails is
> Assertion 'open_databases > 0 && max >= open_databases, name' failed: should
> keep the same number of open databases when reaching the max_dbs_open limit
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