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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