failed with exception null hive

LFS

When We are loading data from LFS to table then it will load on second  try to load same data now data exist so it will create a copy  new newfile suffixed by *_copy_1.

/user/hive/warehouse/databasename/tablename


HDFS

When We are loading data from HDFS to table then it will try -mv  on second  try to load same data now data exist so it will not  perform -mv DUE to Write Once read many HDFS Feature and rename the source file.