Daryn Sharp created HADOOP-10146:
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Summary: Workaround JDK7 Process fd close bug
Key: HADOOP-10146
URL: https://issues.apache.org/jira/browse/HADOOP-10146
Project: Hadoop Common
Issue Type: Bug
Components: util
Affects Versions: 2.0.0-alpha, 0.23.0, 3.0.0
Reporter: Daryn Sharp
Assignee: Daryn Sharp
Priority: Critical
JDK7's {{Process}} output streams have an async fd-close race bug. This
manifests as commands run via o.a.h.u.Shell causing threads to hang, OOM, or
cause other bizarre behavior. The NM is likely to encounter the bug under
heavy load.
Specifically, {{ProcessBuilder}}'s {{UNIXProcess}} starts a thread to reap the
process and drain stdout/stderr to avoid a lingering zombie process. A race
occurs if the thread using the stream closes it, the underlying fd is
recycled/reopened, while the reaper is draining it.
{{ProcessPipeInputStream.drainInputStream}}'s will OOM allocating an array if
{{in.available()}} returns a huge number, or may wreak havoc by incorrectly
draining the fd.
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