Gracefully handle OutOfMemoryErrors
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Key: HDFS-2911
URL: https://issues.apache.org/jira/browse/HDFS-2911
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node, name-node
Affects Versions: 1.0.0, 0.23.0
Reporter: Eli Collins
We should gracefully handle j.l.OutOfMemoryError exceptions in the NN or DN. We
should catch them in a high-level handler, cleanly fail the RPC (vs sending
back the OOM stackrace) or background thread, and shutdown the NN or DN.
Currently the process is left in a not well-test tested state (continuously
fails RPCs and internal threads, may or may not recover and doesn't shutdown
gracefully).
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