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https://issues.apache.org/jira/browse/COUCHDB-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14299744#comment-14299744
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ASF GitHub Bot commented on COUCHDB-2531:
-----------------------------------------
GitHub user willholley opened a pull request:
https://github.com/apache/couchdb-fabric/pull/10
Handle empty list of id/revs in fabric:get_missing_revs
fabric_doc_missing_revs:go doesn't handle the case when AllIdsRevs is an
empty list (resulting in a timeout). Given this will always result
in an empty response, handle this explicitly and avoid the delegation /
aggregation from shards.
An alternative solution would be to fix fabric_doc_missing_revs:go to
prevent the time out rather than returning immediately. Comments on that
approach vs the proposed solution and guidance around where to add appropriate
tests for the original problem (POST to /_revs_diff with no revisions times out
in clustered CouchDB 2.0) would be much appreciated.
COUCHDB-2531
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/willholley/couchdb-fabric
2531-handle-empty-idrevs-get-missing-revs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/couchdb-fabric/pull/10.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #10
----
commit 2f0798b3f0c16f2010a09bf15dc0d4ac60bd7f6e
Author: Will Holley <[email protected]>
Date: 2015-01-30T21:56:16Z
Handle empty list of id/revs in fabric:get_missing_revs
fabric_doc_missing_revs:go doesn't handle the case when AllIdsRevs is
an empty list (resulting in a timeout). Given this will always result
in an empty response, handle this explicitly and avoid the delegation /
aggregation from shards.
COUCHDB-2531
----
> CouchDB 2.0: POST to /_revs_diff with no revisions times out
> ------------------------------------------------------------
>
> Key: COUCHDB-2531
> URL: https://issues.apache.org/jira/browse/COUCHDB-2531
> Project: CouchDB
> Issue Type: Bug
> Security Level: public(Regular issues)
> Reporter: Will Holley
>
> In CouchDB 1.6, posting an empty object to the _revs_diff endpoint returns an
> empty object:
> {code}
> $ curl http://127.0.0.1:5984/revsdifftest -XPUT
>
> {"ok":true}
> $ curl http://127.0.0.1:5984/revsdifftest/_revs_diff -XPOST
> -H"Content-Type:application/json" -d"{}"
> {}
> {code}
> In CouchDB 2.0, the same request results in a timeout:
> {code}
> $ curl http://127.0.0.1:15984/revsdifftest -XPUT
>
> {"ok":true}
> $ curl http://127.0.0.1:15984/revsdifftest/_revs_diff -XPOST
> -H"Content-Type:application/json" -d"{}"
> {"error":"badmatch","reason":"{error,timeout}","ref":1478668763}
> {code}
> This currently breaks the PouchDB test suite when running against CouchDB
> master.
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