liubingxing created HDFS-16423:
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Summary: balancer should not get blocks on stale storages
Key: HDFS-16423
URL: https://issues.apache.org/jira/browse/HDFS-16423
Project: Hadoop HDFS
Issue Type: Improvement
Components: balancer & mover
Reporter: liubingxing
We have met a problems as described in HDFS-16420
We found that balancer copied a block multi times without deleting the source
block if this block was placed in a stale storage. And resulting a block with
many copies, but these redundant copies are not deleted until the storage
become not stale.
balancer copied the same block many times
!image-2022-01-10-17-31-35-910.png!
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