Ming Ma created HDFS-6745:
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Summary: Display the list of "very-under-replicated blocks" as
well as the files on NN webUI
Key: HDFS-6745
URL: https://issues.apache.org/jira/browse/HDFS-6745
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Ming Ma
Sometimes admins want to know the list of "very-under-replicated blocks" before
major actions such as decommission; as these blocks are more likely to turn
into missing blocks. "very-under-replicated blocks" are those blocks with live
replica count of 1 and replicator factor of >= 3.
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