Chris Nauroth created HDFS-6678:
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Summary: MiniDFSCluster may still be partially running after
initialization fails.
Key: HDFS-6678
URL: https://issues.apache.org/jira/browse/HDFS-6678
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Affects Versions: 3.0.0, 2.5.0
Reporter: Chris Nauroth
Assignee: Chris Nauroth
Priority: Minor
{{MiniDFSCluster}} initializes the daemons (NameNodes, DataNodes) as part of
object construction. If initialization fails, then the constructor throws an
exception. When this happens, it's possible that daemons are left running in
the background. There is effectively no way to clean up after this state,
because the constructor failed, and therefore the caller has no way to trigger
a shutdown.
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