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https://issues.apache.org/jira/browse/MESOS-206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13398622#comment-13398622
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Matei Zaharia commented on MESOS-206:
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So that might actually be an HDFS issue, or an issue with machines becoming
overloaded. Can you look at the HDFS datanode logs on that node? Maybe the
datanode crashed, or maybe the machine was overloaded for some reason and very
slow.
The reason the JobTracker uses HDFS, by the way, is that Hadoop clients submit
jobs by first writing the JAR and config file to HDFS.
> Long-running jobs on Hadoop framework do not run to completion
> --------------------------------------------------------------
>
> Key: MESOS-206
> URL: https://issues.apache.org/jira/browse/MESOS-206
> Project: Mesos
> Issue Type: Bug
> Components: framework
> Reporter: Jessica J
> Priority: Blocker
>
> When I run the MPI and Hadoop frameworks simultaneously with long-running
> jobs, the Hadoop jobs fail to complete. The MPI job, which is shorter,
> completes normally, and the Hadoop framework continues for a while, but
> eventually, although it appears to still be running, it stops making progress
> on the jobs. The jobtracker keeps running, but each line of output indicates
> no map or reduce tasks are actually being executed:
> 12/06/08 10:55:41 INFO mapred.FrameworkScheduler: Assigning tasks for
> [slavehost] with 0 map slots and 0 reduce slots
> I've examined the master's log and noticed this:
> I0608 10:40:43.106740 6317 master.cpp:681] Deactivating framework
> 201206080825-36284608-5050-6311-0000 as requested by
> scheduler(1)@[my-ip]:59317
> The framework ID is that of the Hadoop framework. This message is followed by
> messages indicating the slaves "couldn't lookup task [#]" and "couldn't
> lookup framework 201206080825-36284608-5050-6311-0000."
> I thought the first time that this error was a fluke since it does not happen
> with shorter running jobs or with the Hadoop framework running independently
> (i.e., no MPI), but I have now consistently reproduced it 4 times.
> UPDATE: I just had the same issue occur when running Hadoop + Mesos without
> the MPI framework running simultaneously.
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