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Restricted Views |
Kite lets you write records to views. Kite then adds the records to the source tables. Kite does not store data in the wrong location when you write to a view. This prevents loss or corruption of data. In the context of a MapReduce or Crunch job, writing records to the wrong place causes the job to fail with an IllegalArgument exception.
For example, you might have a Movies dataset partitioned by decade. Your application works with a view on that dataset. Your application attempts to store a record with a release date of 1941 in the 1950s partition. The operation fails.
It's important to write your applications so that they "do the right thing" when they write to a view. This will avoid the exception and its unhelpful message.
If storage rules are not significant in your application, you can avoid these checks by writing directly to the top-level dataset.