flatten documentation does not discuss flatten of empty bag
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Key: PIG-1606
URL: https://issues.apache.org/jira/browse/PIG-1606
Project: Pig
Issue Type: Bug
Components: documentation
Reporter: Thejas M Nair
>From the existing flatten documentation, it is not clear that flatten of an
>empty bag results in that row being discarded .
For example the following query gives no output -
{code}
grunt> cat /tmp/empty.bag
{} 1
grunt> l = load '/tmp/empty.bag' as (b : bag{}, i : int);
grunt> f = foreach l generate flatten(b), i;
grunt> dump f;
grunt>
{code}
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