Qifan Chen created IMPALA-10178:
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Summary: Run-time profile shall report skews
Key: IMPALA-10178
URL: https://issues.apache.org/jira/browse/IMPALA-10178
Project: IMPALA
Issue Type: Improvement
Reporter: Qifan Chen
Currently per fragment, in addition to fragment instance profile, only an
average profile is provided. One has to go over fragment instance profiles to
figure out whether there exist skews. By skews we mean certain operator
instances process much more rows than others for the same fragment.
It will be useful if skew information can be provided in the run-time profile.
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