hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7492) Enhance SparkCollector
Date Thu, 07 Aug 2014 20:59:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089839#comment-14089839
] 

Chao commented on HIVE-7492:
----------------------------

Hi [~vkorukanti] and [~brocknoland], after applying the patch, running following simple query:

{code}
select key, sum(value) from src group by key
{code}

produces no result. However, it works before this patch.
Can you take a look? Thanks!

> Enhance SparkCollector
> ----------------------
>
>                 Key: HIVE-7492
>                 URL: https://issues.apache.org/jira/browse/HIVE-7492
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Xuefu Zhang
>            Assignee: Venki Korukanti
>             Fix For: spark-branch
>
>         Attachments: HIVE-7492-1-spark.patch, HIVE-7492.2-spark.patch
>
>
> SparkCollector is used to collect the rows generated by HiveMapFunction or HiveReduceFunction.
It currently is backed by a ArrayList, and thus has unbounded memory usage. Ideally, the collector
should have a bounded memory usage, and be able to spill to disc when its quota is reached.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message