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https://issues.apache.org/jira/browse/HIVE-677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12735221#action_12735221
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Raghotham Murthy commented on HIVE-677:
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It probably makes sense to add the following to the Operator interface?
{code}
OperatorProgress getProgress();
{code}
This way, at different points in time, we could walk the operator tree and dump
out a progress report for all operators.
> better debugging
> ----------------
>
> Key: HIVE-677
> URL: https://issues.apache.org/jira/browse/HIVE-677
> Project: Hadoop Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.4.0
>
> Attachments: hive.677.1.patch, hive.677.2.patch, hive.677.3.patch
>
>
> Currently, we have no idea how many rows are being produced by join/file sink
> while the process is running.
> It makes the tasks very difficult to debug - it would be very useful to dump
> some stats while the process (mapper/reducer) is running
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