[
https://issues.apache.org/jira/browse/HDFS-8824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16434671#comment-16434671
]
Wei-Chiu Chuang commented on HDFS-8824:
---------------------------------------
Looks like HDFS-13222 address Kihwal's concern. It makes it easy to tune the
small block parameter from balancer side.
> Do not use small blocks for balancing the cluster
> -------------------------------------------------
>
> Key: HDFS-8824
> URL: https://issues.apache.org/jira/browse/HDFS-8824
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Priority: Major
> Fix For: 2.8.0, 2.7.4, 3.0.0-alpha1
>
> Attachments: h8824_20150727b.patch, h8824_20150811b.patch
>
>
> Balancer gets datanode block lists from NN and then move the blocks in order
> to balance the cluster. It should not use the blocks with small size since
> moving the small blocks generates a lot of overhead and the small blocks do
> not help balancing the cluster much.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
