[HDFS-3505] DirectoryScanner does not join all threads in shutdown

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.2-alpha
• Hadoop Flags: Reviewed
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 05/Jun/12 00:19
• Updated: 11/Oct/12 17:46
• Resolved: 06/Jun/12 21:02

Description

DirectoryScanner does not join all the threads it spawned during DirectoryScanner#shutdown.

This can lead to rare failures in TestDirectoryScanner when some threads linger past their designated expiration date and cause interference between different test runs.

The fix is to call ExecutorService#awaitTermination.