[HDFS-7924] NameNode goes into infinite lease recovery

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.6.0
• Component/s: hdfs-client, namenode
• Assignee: Yi Liu
• Reporter: Arpit Agarwal
• Created: 12/Mar/15 22:51
• Updated: 07/Apr/21 00:07

Description

We encountered an HDFS lease recovery issue. All DataNodes+NameNodes were restarted while a client was running. A block was created on the NN but it had not yet been created on DNs. The NN tried to recover the lease for the block on restart but was unable to do so getting into an infinite loop.

Issue Links

• relates to: HDFS-4516 Client crash after block allocation and NN switch before lease recovery for the same file can cause readers to fail forever