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

Posted to issues@impala.apache.org by "Abhishek Rawat (JIRA)" <ji...@apache.org> on 2019/06/19 17:00:00 UTC

[jira] [Resolved] (IMPALA-8617) Add support for lz4 in parquet

     [ https://issues.apache.org/jira/browse/IMPALA-8617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Abhishek Rawat resolved IMPALA-8617.
------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> Add support for lz4 in parquet
> ------------------------------
>
>                 Key: IMPALA-8617
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8617
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>            Reporter: Abhishek Rawat
>            Assignee: Abhishek Rawat
>            Priority: Major
>              Labels: parquet
>             Fix For: Impala 3.3.0
>
>
> Hadoop uses a native block format for LZ4 (same as parquet-mr api) which is incompatible with LZ4 block format.
> As a result Parquet/LZ4 could have different block formats.
> The parquet-cpp api (now Apache Arrow) uses LZ4 frame format, which is also incompatible with LZ4 block format.
> The current decision is to use a format compatible with Hive, Spark and parquet-mr.
>  



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)