DataNode#shutdown sometimes leaves data block scanner verification log unclosed
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Key: HADOOP-5009
URL: https://issues.apache.org/jira/browse/HADOOP-5009
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Affects Versions: 0.17.0
Reporter: Hairong Kuang
Assignee: Hairong Kuang
Fix For: 0.19.1
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.
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