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https://issues.apache.org/jira/browse/HADOOP-7973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13188546#comment-13188546
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Daryn Sharp commented on HADOOP-7973:
-------------------------------------
I thought about that myself. If close removes a cached object from the cache,
it's still hard to know exactly when to close it since other references may
exist. I have a much better idea in mind, will post example shortly.
> DistributedFileSystem close has severe consequences
> ---------------------------------------------------
>
> Key: HADOOP-7973
> URL: https://issues.apache.org/jira/browse/HADOOP-7973
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 1.0.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Blocker
> Attachments: HADOOP-7973-2.patch, HADOOP-7973.patch
>
>
> The way {{FileSystem#close}} works is very problematic. Since the
> {{FileSystems}} are cached, any {{close}} by any caller will cause problems
> for every other reference to it. Will add more detail in the comments.
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