drill-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jinfeng Ni (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (DRILL-2517) Apply Partition pruning before reading files during planning
Date Mon, 18 Jan 2016 23:28:39 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jinfeng Ni reassigned DRILL-2517:
---------------------------------

    Assignee: Jinfeng Ni

> 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: Jinfeng Ni
>             Fix For: Future
>
>
> 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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message