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https://issues.apache.org/jira/browse/HIVE-17304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16213445#comment-16213445
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Ashutosh Chauhan commented on HIVE-17304:
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[~prasanth_j] Shall we commit this?
> ThreadMXBean based memory allocation monitory for hash table loader
> -------------------------------------------------------------------
>
> Key: HIVE-17304
> URL: https://issues.apache.org/jira/browse/HIVE-17304
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-17304.1.patch, HIVE-17304.2.patch
>
>
> Hash table memory monitoring is based on java data model which can be
> unreliable because of various reasons (wrong object size estimation, adding
> new variables to any class without accounting its size for memory monitoring,
> etc.). We can use allocation size per thread that is provided by ThreadMXBean
> and fallback to DataModel in case if JDK doesn't support thread based
> allocations.
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