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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3513) HttpFS should cache filesystems
Date Wed, 06 Jun 2012 19:20:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alejandro Abdelnur updated HDFS-3513:
-------------------------------------

    Status: Open  (was: Patch Available)

cache should keep track of lease reference count
                
> HttpFS should cache filesystems
> -------------------------------
>
>                 Key: HDFS-3513
>                 URL: https://issues.apache.org/jira/browse/HDFS-3513
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>         Attachments: HDFS-3513.patch
>
>
> HttpFS opens and closes a FileSystem instance against the backend filesystem (typically
HDFS) on every request. The FileSystem caching is not used as it does not have expiration/timeout
and filesystem instances in there live forever, for long running services like HttpFS this
is not a good thing as it would keep connections open to the NN.

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