You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2016/01/27 20:20:39 UTC
[jira] [Updated] (HIVE-12945) Bucket pruning: bucketing for -ve
hashcodes have historical issues
[ https://issues.apache.org/jira/browse/HIVE-12945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gopal V updated HIVE-12945:
---------------------------
Priority: Critical (was: Major)
> Bucket pruning: bucketing for -ve hashcodes have historical issues
> ------------------------------------------------------------------
>
> Key: HIVE-12945
> URL: https://issues.apache.org/jira/browse/HIVE-12945
> Project: Hive
> Issue Type: Bug
> Components: Tez
> Affects Versions: 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Critical
>
> The different ETL pathways differed in reducer choice slightly for -ve hashcodes.
> {code}
> (hashCode & Integer.MAX_VALUE) % numberOfBuckets;
> !=
> Math.abs(hashCode) % numberOfBuckets
> {code}
> Add a backwards compat option, which can be used to protect against old data left over from 0.13.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)