Hi Yong,
There is no limitation on the levels of nesting that you can have in
your data.
Pig has nested-foreach which lets you manipulate bags directly as if it
were a relation. But that works only for one level. There are plans to
extend that.
You can always process data with any levels of nesting in a udf or
load/store function, or use flatten to un-nest data.
-Thejas
On 7/19/11 2:41 AM, 勇胡 wrote:
Hello,
I know that pig can support nested data. I want to know that how many nested
depth pig can support, infinite nested or there exists a limitation?
Thanks!
Yong
