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https://issues.apache.org/jira/browse/CASSANDRA-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12736065#action_12736065
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Hudson commented on CASSANDRA-182:
----------------------------------
Integrated in Cassandra #151 (See
[http://hudson.zones.apache.org/hudson/job/Cassandra/151/])
Use arrayblockingqueue in commitlog executor; this cleans up the code a bit
(performance is unaffected since the writes and syncs are far more expensive
than any queue ops)
patch by jbellis; reviewed by Jun Rao for
add config options for commitlog syncing
patch by jbellis; reviewed by Jun Rao for
custom CommitLogExecutorService that can fsync per multiple CL additions
patch by jbellis; reviewed by Jun Rao for
move log ops to callables on a threadpoolexecutor instead of synchronizing.
this prepares the way to merge multiple add() calls into a single sync.
patch by jbellis; reviewed by Jun Rao for
naive fsync-after-each-log-entry
patch by jbellis; reviewed by Jun Rao for
mv AbstractWriter to its own top-level class and remove redundant IFileWriter
patch by jbellis; reviewed by Jun Rao for
handle incomplete CL entries on recover
patch by jbellis; reviewed by Jun Rao for
> CommitLog.add doesn't really force to disk
> ------------------------------------------
>
> Key: CASSANDRA-182
> URL: https://issues.apache.org/jira/browse/CASSANDRA-182
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.3
> Reporter: Sandeep Tata
> Assignee: Jonathan Ellis
> Fix For: 0.4
>
> Attachments:
> 0001-CASSANDRA-182-handle-incomplete-CL-entries-on-recover.txt,
> 0002-mv-AbstractWriter-to-its-own-top-level-class-and-remov.txt,
> 0003-naive-fsync-after-each-log-entry.txt, 0004-threadpoolexecutor.txt,
> 0005-custom-CommitLogExecutorService-that-can-fsync-per-mul.txt,
> 0006-config-options.txt, 0007-arrayblockingqueue.txt, 0008-updates.txt,
> CASSANDRA-182.patch
>
>
> CommitLog.add does't really force writes to disk. This could result in acked
> writes being lost.
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