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From "Vinitha Reddy Gankidi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12173) NetworkTopology#add calls NetworkTopology#toString always
Date Wed, 10 May 2017 23:02:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16005607#comment-16005607
] 

Vinitha Reddy Gankidi commented on HADOOP-12173:
------------------------------------------------

The patch applies cleanly to branch-2.7. Attached a branch specific patch to trigger the nightly
build.

> NetworkTopology#add calls NetworkTopology#toString always
> ---------------------------------------------------------
>
>                 Key: HADOOP-12173
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12173
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Inigo Goiri
>            Assignee: Inigo Goiri
>              Labels: release-blocker
>             Fix For: 2.8.0, 3.0.0-alpha1
>
>         Attachments: HADOOP-12173-branch-2.7.patch, HADOOP-12173-v1.patch
>
>
> It always does a toString of the whole topology but this is not required when there are
no errors. This is adding a very big overhead to large clusters as it's walking the whole
tree every time we add a node to the cluster.
> HADOOP-10953 did some fix in that area but the errors is still there.



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