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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5954) Allow proper fsync support for HBase
Date Thu, 29 Jan 2015 05:01:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296377#comment-14296377
] 

Lars Hofhansl commented on HBASE-5954:
--------------------------------------

I'll rebase the patch (if needed), and get a precommit run.
It'll be hard to verify with a test that this is doing what it should.
Maybe we should generally add some metrics around WALEdit, how many log entries, how many
edits flushed and sync'ed, etc. That would be generally useful, and let us write unittests.

> Allow proper fsync support for HBase
> ------------------------------------
>
>                 Key: HBASE-5954
>                 URL: https://issues.apache.org/jira/browse/HBASE-5954
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile, wal
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: 5954-WIP-trunk.txt, 5954-WIP-v2-trunk.txt, 5954-trunk-hdfs-trunk-v2.txt,
5954-trunk-hdfs-trunk-v3.txt, 5954-trunk-hdfs-trunk-v4.txt, 5954-trunk-hdfs-trunk-v5.txt,
5954-trunk-hdfs-trunk-v6.txt, 5954-trunk-hdfs-trunk.txt, hbase-hdfs-744.txt
>
>
> At least get recommendation into 0.96 doc and some numbers running w/ this hdfs feature
enabled.



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