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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Resolved] (OAK-3372) Collapsing external events in BackgroundObserver even before queue is full leads to JournalEntry not getting used
Date Wed, 04 Nov 2015 08:28:27 GMT

     [ https://issues.apache.org/jira/browse/OAK-3372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig resolved OAK-3372.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.3.10

Fixed as per Vikas' last comment.

> Collapsing external events in BackgroundObserver even before queue is full leads to JournalEntry
not getting used
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: OAK-3372
>                 URL: https://issues.apache.org/jira/browse/OAK-3372
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.3.5
>            Reporter: Vikas Saurabh
>            Assignee: Michael Dürig
>              Labels: resilience
>             Fix For: 1.3.10
>
>         Attachments: OAK-3372.patch
>
>
> BackgroundObserver currently merges external events if the last one in queue is also
an external event. This leads to diff being done for a revision pair which is different from
the ones pushed actively into cache during backgroud read (using JournalEntry) i.e. diff queries
for {{diff("/a/b", rA, rC)}} while background read had pushed results of {{diff("/a/b", rA,
rB)}} and {{diff("/a/b", rB, rC)}}.
> (cc [~mreutegg], [~egli], [~chetanm], [~mduerig])



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