Elliott Clark created HDFS-10564:
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Summary: UNDER MIN REPL'D BLOCKS should be prioritized for
replication
Key: HDFS-10564
URL: https://issues.apache.org/jira/browse/HDFS-10564
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Elliott Clark
When datanodes get drained they are probably being drained because the hardware
is bad, or suspect. The blocks that have no live nodes should be prioritized.
However it appears not to be the case at all.
Draining full nodes with lots of blocks but only a handful of under min
replicated blocks takes about the full time before fsck reports clean again.
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