what is combinability and non combinability?

Answer Posted / sharath s j

Combinability refers to combining operators while running
the job.
EX: Data is read from some table (parallel) Then thru copy
stage u r moving it to another parallel target stage (oracle).

Here the operation of moving thru copy stage will be
combined. When u run the job, you wil not get log entries
for copy stage. And performance stats will not show that the
data is moved to oracle (since copy is combined with oracle)
If you selct "do not combine" in the copy stage, you will
get the logs for copy stage.

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