Details
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Improvement
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Status: Open
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Major
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Resolution: Unresolved
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None
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None
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None
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ghx-label-12
Description
Delimited output is much faster then pretty printing, but can still be the bottleneck when printing large result sets (50-80% of CPU time in impala-shell).
Was able to significantly improve performance by rewriting adding custom CSV writer to DelimitedOutputFormatter:
https://gerrit.cloudera.org/#/c/19894/