Xiao Liang created HDFS-15455:
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Summary: Expose HighestPriorityReplBlocks and LastReplicaBlocks
statistics
Key: HDFS-15455
URL: https://issues.apache.org/jira/browse/HDFS-15455
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 2.9.2, 2.9.0
Reporter: Xiao Liang
Assignee: Xiao Liang
Similar to HDFS-13658, blocks with only 1 replica may cause the lost of
customer data, so we need to make this awared and take action if necessary.
This change is for HDFS 2.9 as we will still be using it for some time and
switching to HDFS 3.X is not simple work.
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