Unhealthy nodes – Error check container executor
I am trying to configure a Hadoop cluster manually using the following guide
I am using 5 SLES 11 VMs (1 master, 1 secondary, 1 HA and 2 data nodes, each on a separate VM)
I am now stuck on Step 4 which is starting JobHistory Server. Once we start this and go to the UI for Yarn ResourceManager, we see the two data nodes as Unhealthy with this health report : ERROR check containerexecutor, OK: disks ok, ;
The ResourceManager log give this message for both data nodes
Node Transitioned from NEW to RUNNING
Node Transitioned from RUNNING to UNHEALTHY
I checked permissions on containerexcecutor and they are exactly the way they are supposed to be —Sr-s— root hadoop containerexecutor
Any idea what else could be the source of this problem?
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