Rushabh S Shah created HDFS-8872:
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Summary: Reporting of missing blocks is different in fsck and
namenode ui/metasave
Key: HDFS-8872
URL: https://issues.apache.org/jira/browse/HDFS-8872
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.6.0
Reporter: Rushabh S Shah
Assignee: Rushabh S Shah
Fix For: 2.7.2
Namenode ui and metasave will not report a block as missing if the only replica
is on decommissioning/decomissioned node where fsck will show it as MISSING.
Since decommissioned node can be formatted/removed anytime, we can actually
lose the block.
Its better to alert on namenode ui if the only copy is on
decomissioned/decommissioning node.
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