You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@impala.apache.org by "Daniel Becker (Jira)" <ji...@apache.org> on 2022/05/20 09:02:00 UTC

[jira] [Resolved] (IMPALA-9470) Use Parquet bloom filters

     [ https://issues.apache.org/jira/browse/IMPALA-9470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Becker resolved IMPALA-9470.
-----------------------------------
    Resolution: Implemented

> Use Parquet bloom filters
> -------------------------
>
>                 Key: IMPALA-9470
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9470
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Backend
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Daniel Becker
>            Priority: Major
>              Labels: parquet
>
> PARQUET-41 has been closed recently. This means Parquet-MR is capable of writing and reading bloom filters.
> Currently bloom filters are per column chunk entries, i.e. with their help we can filter out entire row groups.
> We already filter row groups in HdfsParquetScanner::NextRowGroup() based on column chunk statistics and dictionaries. Skipping row groups based on bloom filters could be also added to this funciton.
> Impala could also write bloom filters.



--
This message was sent by Atlassian Jira
(v8.20.7#820007)