hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3285) Hlog recovery takes too much time
Date Fri, 07 Jan 2011 22:57:48 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HBASE-3285:
---------------------------------

    Attachment: hbaseRecoverHLog.patch

Here is the patch that uses the new recoverLease API to recover HLog.

I assume that CDH will pull in the HADOOP recoverLease change into their distribution.

> Hlog recovery takes too much time
> ---------------------------------
>
>                 Key: HBASE-3285
>                 URL: https://issues.apache.org/jira/browse/HBASE-3285
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>         Attachments: hbaseRecoverHLog.patch
>
>
> Currently HBase uses append to trigger the close of HLog during Hlog split. Append is
a very expensive operation, which involves not only NameNode operations but creating a writing
pipeline. If one of datanodes on the pipeline has a problem, this recovery may takes minutes.
I'd like implement a lightweight NameNode operation to trigger lease recovery and make HBase
to use this instead.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message