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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9566) Remove expensive getStorages method
Date Wed, 16 Dec 2015 21:28:46 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daryn Sharp updated HDFS-9566:
------------------------------
    Attachment: HDFS-9566.patch
                HDFS-9566.branch-2.patch

Just removes it.

> Remove expensive getStorages method
> -----------------------------------
>
>                 Key: HDFS-9566
>                 URL: https://issues.apache.org/jira/browse/HDFS-9566
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 3.0.0, 2.8.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-9566.branch-2.patch, HDFS-9566.patch
>
>
> HDFS-5318 added a {{BlocksMap#getStorages(Block, State)}} which is based on iterables
and predicates.  The method is very expensive compared to a simple comparison/continue.



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