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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7835) Implementation of the log splitting without creating intermediate files
Date Mon, 15 Apr 2013 01:21:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13631447#comment-13631447

Jeffrey Zhong commented on HBASE-7835:

[~jxiang] Thanks for the reviewing! We still have the optimization. You can check file HLogSplitter.java
{code}sequenceIdChecker.getLastSequenceId(serverNameStr, region);{code}. Basically we record
lastFlushedSequenceId in ZK and use them to skip flushed edits. We store the information per
RS to handle the scenario when a RS fails multiple times in a row.
> Implementation of the log splitting without creating intermediate files 
> ------------------------------------------------------------------------
>                 Key: HBASE-7835
>                 URL: https://issues.apache.org/jira/browse/HBASE-7835
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 0.95.1
>         Attachments: hbase-7006_12.patch, hbase-7006_13.patch, hbase-7006_1.patch, hbase-7006_2.patch,
hbase-7006_3.patch, hbase-7006_3.patch, hbase-7006_6.patch, hbase-7006_8.patch
> The sub task is to check in a separate patch for major implementation for the proposal.

> More checkins will include a new "replay" command and more metrics support.
> Thanks,
> -Jeffrey 

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