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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OAK-2592) Commit does not ensure w:majority
Date Mon, 09 Mar 2015 09:38:38 GMT
Marcel Reutegger created OAK-2592:

             Summary: Commit does not ensure w:majority
                 Key: OAK-2592
                 URL: https://issues.apache.org/jira/browse/OAK-2592
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: core, mongomk
            Reporter: Marcel Reutegger
            Assignee: Marcel Reutegger
             Fix For: 1.4

The MongoDocumentStore uses {{findAndModify()}} to commit a transaction. This operation does
not allow an application specified write concern and always uses the MongoDB default write
concern {{Acknowledged}}. This means a commit may not make it to a majority of a replica set
when the primary fails. From a MongoDocumentStore perspective it may appear as if a write
was successful and later reverted. See also the test in OAK-1641.

To fix this, we'd probably have to change the MongoDocumentStore to avoid {{findAndModify()}}
and use {{update()}} instead.

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