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https://issues.apache.org/jira/browse/HADOOP-18807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17743614#comment-17743614
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Xiaoqiao He commented on HADOOP-18807:
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cc [~LiJinglun] would you mind to take a review?

> Close child file systems in ViewFileSystem when cache is disabled.
> ------------------------------------------------------------------
>
>                 Key: HADOOP-18807
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18807
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Shuyan Zhang
>            Priority: Major
>              Labels: pull-request-available
>
> When the cache is configured to disabled (namely, 
> `fs.viewfs.enable.inner.cache=false` and `fs.*.impl.disable.cache=true`), 
> even if `FileSystem.close()` is called, the client cannot truly close the 
> child file systems in a ViewFileSystem. This caused our long-running clients 
> to constantly produce resource leaks.



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