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2012/02/06 13:55 straka 2012/02/06 13:51 straka 2012/02/06 13:49 straka 2012/02/05 21:45 straka 2012/02/05 19:16 straka vytvořeno Go Next revision		Previous revision 2012/02/06 13:55 straka 2012/02/06 13:51 straka 2012/02/06 13:49 straka 2012/02/05 21:45 straka 2012/02/05 19:16 straka vytvořeno Go Last revision Both sides next revision
courses:mapreduce-tutorial:if-things-go-wrong [2012/02/05 19:16] straka vytvořeno		courses:mapreduce-tutorial:if-things-go-wrong [2012/02/06 13:51] straka
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-	====== MapReduce Tutorial : ======	+	====== MapReduce Tutorial : If things go wrong ======
		+
		+	A lot can go wrong in the process of submitting and running Hadoop job:
		+	* ''Hadoop::Runner.pm'' module not found: The Perl Hadoop package is not configured, see [[.:step-1|Setting the environment]].
		+	* ''ipc.Client: Retrying connect to server: IP_ADDRESS:PORT. Already tried ? time(s)'': The jobtracker cannot be contacted. If using ''-jt jobtracker:port'' flag, check, that the jobtracker address is correct.
		+	* ''/net/projects/hadoop/bin/hadoop-cluster'' fails to start a cluster: Look where the jobtracker was scheduled by SGE using ''qstat''. Login to that machine and investigate logs in ''/var/log/hadoop/$USER/$SGE_JOBID/''.

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