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https://issues.apache.org/jira/browse/HADOOP-6356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HADOOP-6356:
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Component/s: fs
The existing FileSystem.CACHE serves the following purposes:
# Cleanup FileSystem objects during shutdown. This includes processing
deleteOnExit and closing RPC connections in hdfs.
# Help closing files.
# Improve performance as mentioned by Dhruba. I suspect the improvement was
negligible.
If we choose not to add cache to the new framework, we have to support (1)
somehow.
> Add a Cache for AbstractFileSystem in the new FileContext/AbstractFileSystem
> framework.
> ---------------------------------------------------------------------------------------
>
> Key: HADOOP-6356
> URL: https://issues.apache.org/jira/browse/HADOOP-6356
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 0.22.0
> Reporter: Sanjay Radia
> Assignee: Sanjay Radia
> Fix For: 0.22.0
>
>
> The new filesystem framework, FileContext and AbstractFileSystem does not
> implement a cache for AbstractFileSystem.
> This Jira proposes to add a cache to the new framework just like with the old
> FileSystem.
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