HA: multi-process MiniDFS cluster for testing ungraceful shutdown
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Key: HDFS-2758
URL: https://issues.apache.org/jira/browse/HDFS-2758
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, test
Affects Versions: HA branch (HDFS-1623)
Reporter: Eli Collins
Assignee: Eli Collins
We should test ungraceful termination of NN processes, this is generally useful
for HDFS testing, but particularly needed for HA since we may do this as via
fencing (send a NN a SIGILL via ssh kill -9, flip the PDU, etc). We can't
currently do this with the MiniDFSCluster since everything is in one process
and killing the native thread hosting the java thread terminates the whole
process.
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