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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HADOOP-12876) [Azure Data Lake] Support for process level FileStatus cache to optimize GetFileStatus frequent opeations
Date Sun, 18 Sep 2016 22:01:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15501716#comment-15501716
] 

Aaron Fabbri edited comment on HADOOP-12876 at 9/18/16 10:00 PM:
-----------------------------------------------------------------

FYI we're working on on something similar for S3.  The umbrella JIRA is HADOOP-13345 and the
in-memory implementation is HADOOP-13452.  Once this work is complete, it should be easy to
refactor so you can access the LocalMetadataStore from ADLS client.


was (Author: fabbri):
FYI we're working on on something similar for S3.  The umbrella JIRA is HADOOP-13448 and the
in-memory implementation is HADOOP-13452.  Once this work is complete, it should be easy to
refactor so you can access the LocalMetadataStore from ADLS client.

> [Azure Data Lake] Support for process level FileStatus cache to optimize GetFileStatus
frequent opeations
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12876
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12876
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs, fs/azure, tools
>            Reporter: Vishwajeet Dusane
>            Assignee: Vishwajeet Dusane
>
> Add support to cache GetFileStatus and ListStatus response locally for limited period
of time. Local cache for limited period of time would optimize number of calls for GetFileStatus
operation.
> One of the example  where local limited period cache would be useful - terasort ListStatus
on input directory follows with GetFileStatus operation on each file within directory. For
2048 input files in a directory would save 2048 GetFileStatus calls during start up (Using
the ListStatus response to cache FileStatus instances).



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