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https://issues.apache.org/jira/browse/HDFS-10319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du updated HDFS-10319:
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Fix Version/s: 2.8.0
> Balancer should not try to pair storages with different types
> -------------------------------------------------------------
>
> Key: HDFS-10319
> URL: https://issues.apache.org/jira/browse/HDFS-10319
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer & mover
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Priority: Minor
> Fix For: 2.8.0, 2.7.3, 3.0.0-alpha1
>
> Attachments: h10319_20160420.patch
>
>
> This is a performance bug – Balancer may pair a source datanode and a target
> datanode with different storage types. Fortunately, it will fail schedule any
> blocks in such pair since it will find out that the storage types are not
> matched later on.
> The bug won't lead to incorrect results.
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