[HDFS-8778] TestBlockReportRateLimiting#testLeaseExpiration can deadlock

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.1
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Arpit Agarwal
• Reporter: Arpit Agarwal
• Created: 14/Jul/15 23:57
• Updated: 30/Aug/16 01:31
• Resolved: 15/Jul/15 21:10

Description

requestBlockReportLease blocks on DataNode registration while holding the NameSystem read lock.

DataNode registration can block on the NameSystem read lock if a writer gets in the queue.