August 2017
Beginner to intermediate
284 pages
6h 51m
English
Content preview from Mastering Apache Storm
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Utilizing batchGlobal operation
This repartitioning operation sends all the tuples belonging to one batch into the same partition. The other batches of the same stream may go to a different partition. As the name suggests, this repartition is global at the batch level. Here is a diagram that shows how the tuples are repartitioned using the batchGlobal operation:
Here is a piece of code that shows how we can use the batchGlobal operation:
mystream.batchGlobal().each(new Fields("a","b"), new myFilter()).parallelismHint(2)
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