Abinitio Partitions

What is the difference between partition, re-partition and departition?

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rcoon7

  • Mar 10th, 2008
 

Dividing a single flow of records(data) into multiple flows is known as partitioning.

Dividing a x-way flows of records(data) into y-way flows is known as re-partitioning.
e.g: 2 ways flow ino 4 ways flow

Combining multiple flows into a single flow of records(data) is known as departitioning.

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partition is coverting a serial file(mfs) into multiple flows --> component used is partition by key or partition by round robin.

departition is opposite of partition , sometime after the parallel processing , you want output to be serialized we using gather and merge component for this.

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