[HADOOP-5009] DataNode#shutdown sometimes leaves data block scanner verification log unclosed

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.17.0
• Fix Version/s: 0.19.1
• Hadoop Flags: Reviewed
• Assignee: Hairong Kuang
• Reporter: Hairong Kuang
• Created: 09/Jan/09 23:57
• Updated: 08/Jul/09 16:43
• Resolved: 21/Jan/09 21:59

Description

When datanode gets shutdown by calling DataNode#shutdown, it occasionally leaves the data block scanner verification log unclosed. There are two possible causes:
1. DataNode does not wait until block scanner thread to exit.
2. DataBlockScanner does not guarantee that the verification log is closed if the scanner is interrupted.