Since version 0.96 HBase introduced namespace support.
Apace Pig has recently updated the HBase dependency to 0.98.12 (
Currently there's no way to specify the namespace for a table.
I suggest to implement it is using a '-namespace' option.
We can't use the namespace in the hbase path as it will break the uri validation : 'hbase://SampleNamespace:SampleTableCopy'
The patch is available. I will look to extend the unittest for the namespace option.
Please review my changes and let me know if I can help with something.