HADOOP-14855. Hadoop scripts may errantly believe a daemon is still running, preventing it from starting. Contributed by Robert Kanter.
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@ -1725,11 +1725,16 @@ function hadoop_status_daemon
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shift
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local pid
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local pspid
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if [[ -f "${pidfile}" ]]; then
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pid=$(cat "${pidfile}")
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if ps -p "${pid}" > /dev/null 2>&1; then
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return 0
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if pspid=$(ps -o args= -p"${pid}" 2>/dev/null); then
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# this is to check that the running process we found is actually the same
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# daemon that we're interested in
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if [[ ${pspid} =~ -Dproc_${daemonname} ]]; then
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return 0
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fi
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fi
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return 1
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fi
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