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