[HAWQ-1760] datalocality information should be showed by default

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0.0
• Fix Version/s: 2.5.0.0
• Component/s: Core
• Assignee: Ruilong Huo
• Reporter: Ruilong Huo
• Created: 11/Mar/20 09:41
• Updated: 11/Mar/20 11:28
• Resolved: 11/Mar/20 11:27

Description

The datalocality information should be showed so as to help analysis query performance.

$ 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)."

Issue Links

• links to: GitHub Pull Request #1491