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https://issues.apache.org/jira/browse/IMPALA-7652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17540244#comment-17540244
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Riza Suminto commented on IMPALA-7652:
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I notice Kudu has bytes_read metrics now:
https://github.com/apache/kudu/blob/17fd93255e124191c840702dab3eed961aadee7f/src/kudu/tserver/tserver.proto#L404-L405
> Fix BytesRead for Kudu scans
> ----------------------------
>
> Key: IMPALA-7652
> URL: https://issues.apache.org/jira/browse/IMPALA-7652
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 3.1.0
> Reporter: Thomas Tauber-Marshall
> Priority: Major
> Labels: newbie
>
> In the runtime profile, all scan nodes have a BytesRead counter. Kudu scan
> nodes do not actually set this counter, which creates confusion when Kudu
> scans report 0 bytes read even though they did in fact read data.
> We should either fill in this counter for Kudu scans, or if its difficult to
> get the count of bytes read from Kudu then we should eliminate the counter
> for Kudu scan node profiles.
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