spark is dead and pid file exists

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spark is dead and pid file exists

Sophia
When I run spark in cloudera of CDH5 with service spark-master start command,it turns out that Spark master is dead and pid file exists,What can I do to solve the problem?
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Re: spark is dead and pid file exists

Theodore Wong
Look in the directory /var/run/spark to see if a spark-master.pid file is left over from a crashed master, and remove it.
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Theodore Wong <tmw@tmwong.org>
www.tmwong.org