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https://issues.apache.org/jira/browse/DRILL-256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13806180#comment-13806180
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Timothy Chen commented on DRILL-256:
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So how do I add enable the TraceInjector? Is there some sort of configuration
that I can turn on/off?
Also seems like writing down all data in the record batches in between each
operator seems like a lot of writes for large amount of data.
I wonder if it can allow a configuration to set it to not write full
data/selection vector, but metadata like Ben has suggested? Then potentially we
can even turn this on for some amount of debugging with large amount of data.
> Implement Diagnostic Operator
> -----------------------------
>
> Key: DRILL-256
> URL: https://issues.apache.org/jira/browse/DRILL-256
> Project: Apache Drill
> Issue Type: New Feature
> Reporter: Jacques Nadeau
> Assignee: Mehant Baid
> Attachments: Revision_1-DRILL-256.patch
>
>
> Support inserting a diagnostic physical operator into a physical plan that
> records the record batches output of a preceding operator. Additionally,
> provide a tool to view this data.
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