You are viewing a plain text version of this content. The canonical link for it is here.

Posted to hdfs-issues@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2015/03/12 21:34:39 UTC

[jira] [Issue Comment Deleted] (HDFS-7433) Optimize performance of DatanodeManager's node map

     [ https://issues.apache.org/jira/browse/HDFS-7433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kihwal Lee updated HDFS-7433:
-----------------------------
    Comment: was deleted

(was: {color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12703937/HDFS-7433.patch
  against trunk revision b49c3a1.

    {color:red}-1 patch{color}.  Trunk compilation may be broken.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9861//console

This message is automatically generated.)

> Optimize performance of DatanodeManager's node map
> --------------------------------------------------
>
>                 Key: HDFS-7433
>                 URL: https://issues.apache.org/jira/browse/HDFS-7433
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: HDFS-7433.patch, HDFS-7433.patch, HDFS-7433.patch, HDFS-7433.patch
>
>
> The datanode map is currently a {{TreeMap}}.  For many thousands of datanodes, tree lookups are ~10X more expensive than a {{HashMap}}.  Insertions and removals are up to 100X more expensive.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)