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https://issues.apache.org/jira/browse/DRILL-2517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kunal Khatua updated DRILL-2517:
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Fix Version/s: (was: Future)
> Apply Partition pruning before reading files during planning
> ------------------------------------------------------------
>
> Key: DRILL-2517
> URL: https://issues.apache.org/jira/browse/DRILL-2517
> Project: Apache Drill
> Issue Type: New Feature
> Components: Query Planning & Optimization
> Affects Versions: 0.7.0, 0.8.0
> Reporter: Adam Gilmore
> Assignee: Kunal Khatua
> Priority: Major
> Fix For: 1.6.0
>
>
> Partition pruning still tries to read Parquet files during the planning stage
> even though they don't match the partition filter.
> For example, if there were an invalid Parquet file in a directory that should
> not be queried:
> {code}
> 0: jdbc:drill:zk=local> select sum(price) from dfs.tmp.purchases where dir0 =
> 1;
> Query failed: IllegalArgumentException: file:/tmp/purchases/4/0_0_0.parquet
> is not a Parquet file (too small)
> {code}
> The reason is that the partition pruning happens after the Parquet plugin
> tries to read the footer of each file.
> Ideally, partition pruning would happen first before the format plugin gets
> involved.
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