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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9318) considerLoad factor can be improved
Date Wed, 04 Nov 2015 17:22:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14989968#comment-14989968
] 

Kihwal Lee commented on HDFS-9318:
----------------------------------

The change itself looks good, but please add the new config to {{hdfs-default.xml}} along
with documentation in the description field.

> considerLoad factor can be improved
> -----------------------------------
>
>                 Key: HDFS-9318
>                 URL: https://issues.apache.org/jira/browse/HDFS-9318
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>         Attachments: HDFS-9318-v1.patch
>
>
> Currently considerLoad avoids choosing nodes that are too active, so it helps level the
HDFS load across the cluster. Under normal conditions, this is desired. However, when a cluster
has a large percentage of nearly full nodes, this can make it difficult to find good targets
because the placement policy wants to avoid the full nodes, but considerLoad wants to avoid
the busy less-full nodes.



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