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https://issues.apache.org/jira/browse/HADOOP-8490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13291187#comment-13291187
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Tsz Wo (Nicholas), SZE commented on HADOOP-8490:
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It sounds like that NM has a specific need on caching. It may make sense to
disable FileSystem cache (using fs.hdfs.impl.disable.cache) for NM and then it
implements its own cache.
Adding conf as a key to current FileSystem cache may break many existing
applications.
> Add Configuration to FileSystem cache key
> -----------------------------------------
>
> Key: HADOOP-8490
> URL: https://issues.apache.org/jira/browse/HADOOP-8490
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.23.0, 0.24.0, 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
>
> The {{FileSystem#get(URI, Configuration}} does not take the given
> {{Configuration}} into consideration before returning an existing fs instance
> from the cache with a possibly different conf.
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