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Posted to issues@impala.apache.org by "Zoltán Borók-Nagy (JIRA)" <ji...@apache.org> on 2019/05/22 09:18:01 UTC
[jira] [Resolved] (IMPALA-7936) Enable better control over Parquet
writing
[ https://issues.apache.org/jira/browse/IMPALA-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zoltán Borók-Nagy resolved IMPALA-7936.
---------------------------------------
Resolution: Fixed
Fix Version/s: Impala 3.3.0
> Enable better control over Parquet writing
> ------------------------------------------
>
> Key: IMPALA-7936
> URL: https://issues.apache.org/jira/browse/IMPALA-7936
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Major
> Fix For: Impala 3.3.0
>
>
> With the introduction of the Parquet page indexes it became desirable to have more control over how Impala writes Parquet files.
> These configuration options (probably implemented as query options) would be:
> * enable/disable Parquet page index writing (currently we can do it with a command-line argument)
> * set page-size limits based on row count
> * -Set truncation length for statistics about string values- (current truncation length is 64, it is unlikely to have user data that needs longer truncation than that)
> They'd enable writing more complete tests for page filtering. They'd be also useful for fine-tuning the page index for better performance.
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