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From "Christian Posta (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (AMQ-5578) preallocate journal files
Date Thu, 19 Feb 2015 23:38:11 GMT

    [ https://issues.apache.org/jira/browse/AMQ-5578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328323#comment-14328323
] 

Christian Posta edited comment on AMQ-5578 at 2/19/15 11:37 PM:
----------------------------------------------------------------

one more commit:

https://github.com/apache/activemq/commit/023b2ac04501a97452eb8a23b6024fd336cb6cf6

added unit tests, logging, and removed the preallocated batch stuff which snuck in with the
previous commit (rebased off wrong branch!). 

should be good to go now.


was (Author: ceposta):
one more commit:

https://github.com/apache/activemq/commit/45e59e6e839ae89ffc099d32a4180ee307543aae

added unit tests, logging, and removed the preallocated batch stuff which snuck in with the
previous commit (rebased off wrong branch!). 

should be good to go now.

> preallocate journal files
> -------------------------
>
>                 Key: AMQ-5578
>                 URL: https://issues.apache.org/jira/browse/AMQ-5578
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Message Store
>    Affects Versions: 5.11.0
>            Reporter: Gary Tully
>            Assignee: Gary Tully
>              Labels: journal, kahaDB, perfomance
>
> Our journals are append only, however we use the size to track journal rollover on recovery
and replay. We can improve performance if we never update the size on disk and preallocate
on creation.
> Rework journal logic to ensure size is never updated. This will allow the configuration
option from https://issues.apache.org/jira/browse/AMQ-4947 to be the default.



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