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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-5588) We should also fsync the directory when committing
Date Thu, 10 Apr 2014 18:50:17 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-5588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13965684#comment-13965684
] 

ASF subversion and git services commented on LUCENE-5588:
---------------------------------------------------------

Commit 1586410 from uschindler@apache.org in branch 'dev/branches/branch_4x'
[ https://svn.apache.org/r1586410 ]

Merged revision(s) 1586407 from lucene/dev/trunk:
LUCENE-5588: Lucene now calls fsync() on the index directory, ensuring that all file metadata
is persisted on disk in case of power failure.

> We should also fsync the directory when committing
> --------------------------------------------------
>
>                 Key: LUCENE-5588
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5588
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/store
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>             Fix For: 4.8, 5.0
>
>         Attachments: LUCENE-5588.patch, LUCENE-5588.patch, LUCENE-5588.patch
>
>
> Since we are on Java 7 now and we already fixed FSDir.sync to use FileChannel (LUCENE-5570),
we can also fsync the directory (at least try to do it). Unlike RandomAccessFile, which must
be a regular file, FileChannel.open() can also open a directory: http://stackoverflow.com/questions/7694307/using-filechannel-to-fsync-a-directory-with-nio-2



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