[HADOOP-9549] WebHdfsFileSystem hangs on close()

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.0.4-alpha
• Fix Version/s: 2.1.0-beta
• Component/s: security
• Target Version/s: 2.1.0-beta
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Kihwal Lee
• Created: 01/May/13 21:28
• Updated: 03/Sep/14 22:47
• Resolved: 10/May/13 16:26

Description

When close() is called via fs shoutdown hook, the synchronized method, removeRenewAction() hangs. This is because DelegationTokenRenewer calls DelayQueue.take() inside a synchronized block. Since this is a blocking call, it hangs forever.

Issue Links

• is related to: HADOOP-9049 DelegationTokenRenewer needs to be Singleton and FileSystems should register/deregister to/from.