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

Posted to issues@impala.apache.org by "Csaba Ringhofer (JIRA)" <ji...@apache.org> on 2019/02/20 15:09:00 UTC

[jira] [Closed] (IMPALA-2125) Improve perf when reading timestamps from parquet files written by hive

     [ https://issues.apache.org/jira/browse/IMPALA-2125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Csaba Ringhofer closed IMPALA-2125.
-----------------------------------
    Resolution: Duplicate

> Improve perf when reading timestamps from parquet files written by hive
> -----------------------------------------------------------------------
>
>                 Key: IMPALA-2125
>                 URL: https://issues.apache.org/jira/browse/IMPALA-2125
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 2.2
>            Reporter: casey
>            Priority: Minor
>
> This is for tracking purposes. The improvement is already committed -- 29de99c9d25c49b73488d2f75bc3644ae9ff9325.
> When using the flag -convert_legacy_hive_parquet_utc_timestamps=true, depending on the query the runtime may be 10x longer (possibly more). The commit above inlines some function calls which improves the 10x case to 5x.



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