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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13427) Eliminate needless uses of FileSystem.exists, isFile, isDirectory
Date Tue, 26 Jul 2016 19:04:22 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated HADOOP-13427:
-----------------------------------
    Summary: Eliminate needless uses of FileSystem.exists, isFile, isDirectory   (was: Eliminate
needless uses of FileSystem.exists, iisFile, isDirectory )

> Eliminate needless uses of FileSystem.exists, isFile, isDirectory 
> ------------------------------------------------------------------
>
>                 Key: HADOOP-13427
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13427
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>
> We're cleaning up Hive and Spark's use of FileSystem.exists, because it is often the
case we see code of exists+open, exists+delete, when the exists probe is needless. Against
object stores, expensive needless.
> Hadoop can set an example here by stripping them out. It will also show where there are
opportunities to optimise things better and/or improve reporting.



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