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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-635) Individual TableMap tasks don't report percentage complete.
Date Tue, 12 Aug 2008 23:39:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622029#action_12622029
] 

stack commented on HBASE-635:
-----------------------------

+1 on Billy's suggestion above.  At start of task, do rough calculation using BigInteger representation
of start and end keys to figure 1/4, 1/2, and 3/4 done.  As the row key comes in, compare
to the calculated 1/4, 1/4, and 3/4 and as soon as we pass out a marker update the Reporter
with our status.

> Individual TableMap tasks don't report percentage complete.
> -----------------------------------------------------------
>
>                 Key: HBASE-635
>                 URL: https://issues.apache.org/jira/browse/HBASE-635
>             Project: Hadoop HBase
>          Issue Type: Improvement
>         Environment: EC2 large instances, HBase 0.1.2, Hadoop 0.16.3
>            Reporter: Daniel Leffel
>            Priority: Minor
>
> Currently, the TableMap spawns a number of Map tasks matching the number of regions being
served. However, each task reports 0% complete until the task is fully complete and jumps
to 100%. It would be ideal if each task accurately reported it's percentage complete.

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