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From "Julian Reschke (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (OAK-7935) RDB*Store: createOrUpdate may fail on stale cache when document was removed on different instance
Date Mon, 03 Dec 2018 20:08:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-7935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16707573#comment-16707573
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Julian Reschke edited comment on OAK-7935 at 12/3/18 8:07 PM:
--------------------------------------------------------------

trunk: [r1848073|http://svn.apache.org/r1848073] (just the test which passes on trunk)
1.8: [r1848096|http://svn.apache.org/r1848096]



was (Author: reschke):
trunk: [r1848073|http://svn.apache.org/r1848073] (just the test which passes on trunk)


> RDB*Store: createOrUpdate may fail on stale cache when document was removed on different
instance
> -------------------------------------------------------------------------------------------------
>
>                 Key: OAK-7935
>                 URL: https://issues.apache.org/jira/browse/OAK-7935
>             Project: Jackrabbit Oak
>          Issue Type: Technical task
>          Components: rdbmk
>    Affects Versions: 1.6.15, 1.8.9
>            Reporter: Julian Reschke
>            Assignee: Julian Reschke
>            Priority: Critical
>              Labels: candidate_oak_1_6
>             Fix For: 1.8.10, 1.9.13, 1..10
>
>
> When executing `createOrUpdate()` on a node that is cached but has been removed from
the database (by a different instance), the operation will fail, and continue to do so until
the cache entry gets evicted or the cache gets manually cleared.
> The exception message somewhat misleadingly says "update of ... failed, race condition?"
> The problem has been fixed already in OAK-7725, but that change is rather big and non-trivial
to backport.
> As a simpler fix for the maintenance branches we should invalidate the cache when the
update fails, so that the system at least recovers and a retry will work.



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