Container Allocation | Container Size in Hadoop Cluster, Read the scenario below

[#1]

As we know Default Minimum Container Size is 1024MBs

Consider this Scenario :

I have setup a Hadoop Cluster <1-Master & 3-Datanodes> in VIRTUAL BOX.

Namenode : master (3GB RAM)

Datanodes : data1 (512MB RAM),

data2(512MB RAM),

data3(1GB RAM).

Input File Size : 500MB with Replication factor 3 (All the nodes having all the blocks)

QUESTION :

1. Now lets say i want to run a Mapreduce Program, Will containers get allocated on data1, data2 ????

According to my results Job created containers on all three datanodes.

2. Is there any way we can specify a Job to run on specific node???????

[#2]

Answered - https://stackoverflow.com/questions/48961391/container-allocation-container-size-in-hadoop-cluster-r...

[#3]

I think you have not understood the Scenario here,
I want to allocate Container of MR job on particular Datanode.
Can we do that by modifying some parameters.