Answer / pooja

Nodemap constraint is a property check in the stage. The
paralell execution of the job can be restriced to a
particular node or nodes at a stage level with this check.
It provides a drop down list of nodes available and by
selecting a particular node or nodes the job executes only
on that particular node or nodes.

For example, if the incoming data is being processed in
parallel mode on 4 nodes then in the next stage if the
nodemap constraint is checked and only 1 node is selected
then the entire data is processed in a sequential mode i.e.
on that particular node.

In case the incoming data processes on 4 nodes and nodemap
contraint is checked and 2 nodes are selected then the data
is distributed on these 2 nodes and the job process is
carried out on the same.

Answer / pooja

Nodemap constraint is a property check in the stage. The
job process can restriced at a stage level with this check.
It provides a drop down list of nodes available and by
selecting a particular node the process only on that
particular node.

For example, if the incoming data is being processed in
parallel mode then in the next stage if the nodemap
constraint is checked then from here on the processing
takes place in a sequential mode.

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