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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-15547) WASB: improve listStatus performance
Date Thu, 19 Jul 2018 21:24:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-15547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-15547:
------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.1.1
           Status: Resolved  (was: Patch Available)

> WASB: improve listStatus performance
> ------------------------------------
>
>                 Key: HADOOP-15547
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15547
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/azure
>    Affects Versions: 2.9.1, 3.0.2
>            Reporter: Thomas Marquardt
>            Assignee: Thomas Marquardt
>            Priority: Major
>             Fix For: 3.1.1
>
>         Attachments: HADOOP-15547-004.patch, HADOOP-15547-004.patch, HADOOP-15547.001.patch,
HADOOP-15547.002.patch, HADOOP-15547.003.patch
>
>
> The WASB implementation of Filesystem.listStatus is very slow due to O(n!) algorithm
to remove duplicates and uses too much memory due to the extra conversion from BlobListItem
to FileMetadata to FileStatus.  It takes over 30 minutes to list 700,000 files.  



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