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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7006) [MTTR] Study distributed log splitting to see how we can make it faster
Date Mon, 29 Apr 2013 07:02:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeffrey Zhong updated HBASE-7006:
---------------------------------

    Attachment: hbase-7006-combined-v3.patch

I posted the latest patch(v3) to review board at https://reviews.apache.org/r/10832

In the v3 patch, it has following changes:
1) Enable distributedLogReplay by default
2) Bug fixes of some tricky issues from recent tests

Thanks,
-Jeffrey
                
> [MTTR] Study distributed log splitting to see how we can make it faster
> -----------------------------------------------------------------------
>
>                 Key: HBASE-7006
>                 URL: https://issues.apache.org/jira/browse/HBASE-7006
>             Project: HBase
>          Issue Type: Bug
>          Components: MTTR
>            Reporter: stack
>            Assignee: Jeffrey Zhong
>            Priority: Critical
>             Fix For: 0.95.1
>
>         Attachments: hbase-7006-combined.patch, hbase-7006-combined-v1.patch, hbase-7006-combined-v2.patch,
hbase-7006-combined-v3.patch, LogSplitting Comparison.pdf, ProposaltoimprovelogsplittingprocessregardingtoHBASE-7006-v2.pdf
>
>
> Just saw interesting issue where a cluster went down  hard and 30 nodes had 1700 WALs
to replay.  Replay took almost an hour.  It looks like it could run faster that much of the
time is spent zk'ing and nn'ing.
> Putting in 0.96 so it gets a look at least.  Can always punt.

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