SQOOP-141. BlobRef accessor returns incorrect data.
SQOOP-141. BlobRef accessor returns incorrect data.

This change fixes the BlobRef implementation to return the appropriate stream
source or byte array from the BytesWritable instance by taking into
consideration the actual data length.

(Peter Hall via arvind)

From: Arvind Prabhakar <arvind@cloudera.com>

git-svn-id: 236921fd9d8b295ce22000433b7f32f512e10ee4@1150000 13f79535-47bb-0310-9956-ffa450edef68

apache/sqoop,unicredit/sqoop,bonnetb/sqoop,rekhajoshm/sqoopfork,YaroslavLitvinov/sqoop,rekhajoshm/sqoopfork,icoding/sqoop,bonnetb/sqoop,unicredit/sqoop,rekhajoshm/sqoopfork,apache/sqoop,icoding/sqoop,dlanza1/parquet-mr,baifendian/sqoop,pkit/sqoop,bonnetb/sqoop,dlanza1/sqoop,apache/sqoop,baifendian/sqoop,baifendian/sqoop,pkit/sqoop,YaroslavLitvinov/sqoop,unicredit/sqoop,YaroslavLitvinov/sqoop,dlanza1/sqoop,dlanza1/sqoop,icoding/sqoop,pkit/sqoop,dlanza1/parquet-mr,dlanza1/parquet-mr