[HDFS-10495] Block should be marked as missing if the all the replicas are on Decommissioned nodes.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Component/s: namenode
• Target Version/s: 2.7.8
• Assignee: Rushabh Shah
• Reporter: Rushabh Shah
• Created: 07/Jun/16 15:15
• Updated: 02/Jun/18 17:45

Description

As discussed on HDFS-8872, we should mark a block as missing if all the replicas on decommissioned nodes since we can take the decommissioned nodes out of rotation anytime.
We have seen multiple cases where all the replicas land on decommissioned nodes.
After HDFS-7933, it doesn't mark as missing.

Issue Links

• duplicates: HDFS-8872 Reporting of missing blocks is different in fsck and namenode ui/metasave
• relates to: HDFS-11609 Some blocks can be permanently lost if nodes are decommissioned while dead