You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues-all@impala.apache.org by "Zoltán Borók-Nagy (JIRA)" <ji...@apache.org> on 2019/01/03 16:22:00 UTC
[jira] [Assigned] (IMPALA-7979) Enhance decoders to support
value-skipping
[ https://issues.apache.org/jira/browse/IMPALA-7979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zoltán Borók-Nagy reassigned IMPALA-7979:
-----------------------------------------
Assignee: Zoltán Borók-Nagy
> Enhance decoders to support value-skipping
> ------------------------------------------
>
> Key: IMPALA-7979
> URL: https://issues.apache.org/jira/browse/IMPALA-7979
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Major
>
> When the parquet scanner can use the page index it is sometimes needed to skip values from the pages. We can just drop these values since we'll never need them.
> The decoders don't support value-skipping at the moment, therefore we have to decode each and every value even if we know that we will never need many of them.
> The decoders should have methods for value-skipping to make scanning more efficient.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscribe@impala.apache.org
For additional commands, e-mail: issues-all-help@impala.apache.org