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https://issues.apache.org/jira/browse/IMPALA-12408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-12408 started by Csaba Ringhofer.
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> Planner spends lot of time in HdfsPartition.getLocation()
> ---------------------------------------------------------
>
> Key: IMPALA-12408
> URL: https://issues.apache.org/jira/browse/IMPALA-12408
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Reporter: Csaba Ringhofer
> Assignee: Csaba Ringhofer
> Priority: Major
> Labels: performance
>
> For queries with lot of partitions the majority of planning time can be spent
> decoding compressed partition locations. This can be often avoid, e.g. by
> caching FsType instead of always decompressing the path to get its prefix:
> https://github.com/apache/impala/blob/218c4c447eadb14fadb8310db4b46ab8c04cb1ba/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java#L914
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