[jira] [Created] (HDFS-10319) Balancer should not try to pair storages with different types

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

Tsz Wo Nicholas Sze created HDFS-10319:
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             Summary: 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


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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