hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8321) Log split worker should heartbeat to avoid timeout
Date Mon, 15 Apr 2013 18:50:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13632019#comment-13632019
] 

Jimmy Xiang commented on HBASE-8321:
------------------------------------

The heartbeat stops if the worker doesn't hold the task any more, or the task is completed.
 So, of course, you won't get the heart beats if the worker is dead.

As to re-assign to a different worker in case one is really slow, yes, this patch doesn't
support it any more.  The idea is that it doesn't help to give the task to others if the file
is under recovery, and it indeed takes time.
                
> Log split worker should heartbeat to avoid timeout
> --------------------------------------------------
>
>                 Key: HBASE-8321
>                 URL: https://issues.apache.org/jira/browse/HBASE-8321
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>         Attachments: trunk-8321_v1.patch
>
>
> Currently, hlog splitter could spend quite sometime to split a log in case any HDFS issue
and recoverLease/retry opening is needed.  If distributed log split manager times out the
log worker, other log worker to take over will run into the same issue.
> Ideally, we should not need a timeout monitor.  Since we have a timeout monitor for DSL
now, the worker should heartbeat to avoid wrong/unneeded timeouts.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message