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https://issues.apache.org/jira/browse/DRILL-4152?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dechang Gu closed DRILL-4152.
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Verified with log turned on. it works.
> Add additional logging and metrics to the Parquet reader
> --------------------------------------------------------
>
> Key: DRILL-4152
> URL: https://issues.apache.org/jira/browse/DRILL-4152
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Parquet
> Reporter: Parth Chandra
> Assignee: Parth Chandra
> Fix For: 1.5.0
>
>
> In some cases, we see the Parquet reader as the bottleneck in reading from
> the file system. RWSpeedTest is able to read 10x faster than the Parquet
> reader so reading from disk is not the issue. This issue is to add more
> instrumentation to the Parquet reader so speed bottlenecks can be better
> diagnosed.
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