Hi,
I have a query on JOIN stage with Hash partitioning.
Is there any scenario when Sorting should not be done while joining two streams with Hash partitioning? Or should I blindly check the Sort option whenever partition type is set to Hash.
Thanks!
Sorting with Hash parition
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Sorting with Hash parition
Nitin Jain | India
If everything seems to be going well, you have obviously overlooked something.
If everything seems to be going well, you have obviously overlooked something.
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ray.wurlod
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Read the chapter in the Parallel Job Developer's Guide on the Join stage. It its inputs to be sorted (on join key columns). The partitioning algorithm is irrelevant to this requirement.
The only time you would elect not to use Sort on the input link is where you are totally confident that the data on the input links are already correctly sorted.
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requires The only time you would elect not to use Sort on the input link is where you are totally confident that the data on the input links are already correctly sorted.
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Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.
Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.