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https://issues.apache.org/jira/browse/HAWQ-1760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17056895#comment-17056895
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ASF GitHub Bot commented on HAWQ-1760:
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huor commented on pull request #1491: HAWQ-1760. datalocality information
should be showed by default
URL: https://github.com/apache/hawq/pull/1491
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> datalocality information should be showed by default
> ----------------------------------------------------
>
> Key: HAWQ-1760
> URL: https://issues.apache.org/jira/browse/HAWQ-1760
> Project: Apache HAWQ
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.4.0.0
> Reporter: Ruilong Huo
> Assignee: Ruilong Huo
> Priority: Major
>
> The datalocality information should be showed so as to help analysis query
> performance.
> {code:c}
> $ cat src/backend/cdb/cdbdatalocality.c
> /* print data locality result*/
> elog(
> DEBUG1, "data locality ratio: %.3f; virtual segment number: %d; "
> "different host number: %d; virtual segment number per
> host(avg/min/max): (%d/%d/%d); "
> "segment size(avg/min/max): (%.3f B/"INT64_FORMAT"
> B/"INT64_FORMAT" B); "
> "segment size with penalty(avg/min/max): (%.3f B/"INT64_FORMAT"
> B/"INT64_FORMAT" B); continuity(avg/min/max): (%.3f/%.3f/%.3f)."
> {code}
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