[jira] [Commented] (BOOKKEEPER-715) bookie: delay dropping journal cached pages

["Hudson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BOOKKEEPER-715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13923866#comment-13923866 ] 

Hudson commented on BOOKKEEPER-715:
-----------------------------------

SUCCESS: Integrated in bookkeeper-trunk #574 (See [https://builds.apache.org/job/bookkeeper-trunk/574/])
BOOKKEEPER-715: bookie: delay dropping journal cached pages (sijie via ivank) (ivank: rev 1575246)
* /zookeeper/bookkeeper/trunk/CHANGES.txt
* /zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalChannel.java
* /zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/util/NativeIO.java


> bookie: delay dropping journal cached pages
> -------------------------------------------
>
>                 Key: BOOKKEEPER-715
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-715
>             Project: Bookkeeper
>          Issue Type: Sub-task
>          Components: bookkeeper-server
>            Reporter: Sijie Guo
>            Assignee: Sijie Guo
>             Fix For: 4.3.0
>
>         Attachments: BOOKKEEPER-715.diff, BOOKKEEPER-715_717.diff
>
>
> As journal writes aren't aligned to sector size, if bookie drops cached pages immediately, journal has to read those pages again, which would impact journal write performance.



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