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https://issues.apache.org/jira/browse/COUCHDB-3402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15990140#comment-15990140
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ASF subversion and git services commented on COUCHDB-3402:
----------------------------------------------------------
Commit 2689507fc0f4a4a3731df34d3634bb1bcd4afbc3 in couchdb's branch
refs/heads/master from [~wohali]
[ https://gitbox.apache.org/repos/asf?p=couchdb.git;h=2689507 ]
Fix error on race condition in mem3 startup
During mem3 startup, 2 paths attempt to call `couch_server:create/2` on
`_dbs`:
```
gen_server:init_it/6
-> mem3_shards:init/1
-> mem3_shards:get_update_seq/0
-> couch_server:create/2
```
and
```
mem3_sync:initial_sync/1
-> mem3_shards:fold/2
-> couch_server:create/2
```
Normally, the first path completes before the second. If the second path
finishes first, the first path fails because it does not expect a
`file_exists` response.
This patch simply retries mem3_util:ensure_exists/1 once if it gets back
a `file_exists` response. Any failures past this point are not handled.
Fixes COUCHDB-3402.
> JS: dev/run timing out starting up nodes
> ----------------------------------------
>
> Key: COUCHDB-3402
> URL: https://issues.apache.org/jira/browse/COUCHDB-3402
> Project: CouchDB
> Issue Type: Bug
> Components: Test Suite
> Reporter: Joan Touzet
> Priority: Critical
>
> Seen this a bunch of times recently in the Jenkins infrastructure. May be a
> symptom of ASF Jenkins nodes being overloaded.
> {noformat}
> make[1]: Entering directory `/usr/src/couchdb/apache-couchdb-2.0.0-28dd801'
> # This might help with emfile errors during `make javascript`: ulimit -n 10240
> Failed to start all the nodes. Check the dev/logs/*.log for errors.
> make[1]: *** [javascript] Error 1
> make[1]: Leaving directory `/usr/src/couchdb/apache-couchdb-2.0.0-28dd801'
> make: *** [check] Error 2
> {noformat}
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