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Posted to oak-issues@jackrabbit.apache.org by "Vikas Saurabh (JIRA)" <ji...@apache.org> on 2015/09/08 14:04:46 UTC
[jira] [Updated] (OAK-3372) Collapsing external events in
BackgroundObserver even before queue is full leads to JournalEntry not
getting used
[ https://issues.apache.org/jira/browse/OAK-3372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vikas Saurabh updated OAK-3372:
-------------------------------
Description:
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])
was:
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])
> 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
> Labels: resilience
>
> 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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