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https://issues.apache.org/jira/browse/HADOOP-16062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16748020#comment-16748020
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Zoltan Haindrich commented on HADOOP-16062:
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As these objects are belong to already closed sessions; they are just occupying
heap space - and will force a "bigger" garbage collection eventually.
I would like to propose to add a "toggle" to make it possible to disable this
feature.
> Add ability to disable Configuration reload registry
> ----------------------------------------------------
>
> Key: HADOOP-16062
> URL: https://issues.apache.org/jira/browse/HADOOP-16062
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Priority: Major
>
> In Hive we see that after an extensive amount of usage there are a lot of
> Configuration objects not fully reclaimed because of Configuration's REGISTRY
> weak hashmap.
> https://github.com/apache/hadoop/blob/abde1e1f58d5b699e4b8e460cff68e154738169b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java#L321
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