Alejandro Abdelnur created HADOOP-8325:
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Summary: remove FileSystem JVM shutdown hook that does closeAll()
Key: HADOOP-8325
URL: https://issues.apache.org/jira/browse/HADOOP-8325
Project: Hadoop Common
Issue Type: Bug
Components: fs
Affects Versions: 2.0.0
Reporter: Alejandro Abdelnur
Assignee: Alejandro Abdelnur
Priority: Critical
Fix For: 2.0.0
FileSystem adds a JVM shutdown hook when a filesystem instance is cached.
MRAppMaster also uses a JVM shutdown hook, among other things, the MRAppMaster
JVM shutdown hook is used to ensure state are written to HDFS.
This creates a race condition because each JVM shutdown hook is a separate
thread and if there are multiple JVM shutdown hooks there is not assurance of
order of execution, they could even run in parallel.
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