hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Siying Dong (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-1737) Two Bugs for Estimating Row Sizes in GroupByOperator
Date Thu, 21 Oct 2010 04:30:16 GMT

     [ https://issues.apache.org/jira/browse/HIVE-1737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Siying Dong updated HIVE-1737:
------------------------------

    Attachment: HIVE-1737.1.patch

> Two Bugs for Estimating Row Sizes in GroupByOperator
> ----------------------------------------------------
>
>                 Key: HIVE-1737
>                 URL: https://issues.apache.org/jira/browse/HIVE-1737
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Siying Dong
>            Assignee: Siying Dong
>         Attachments: HIVE-1737.1.patch
>
>
> Two bugs:
> 1. if UDAF uses string type, Group-by will break as it tries to insert an ArrayList<Object>
to a HashMap<KeyWrapper, AggregationBuffer[]>.
> 2. The code to sample size of keys only handles String type and Text type, while in most
cases, they are org.apache.hadoop.hive.serde2.lazy.LazyString, so that 0 is always used.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message