add generalized hdfs read/writer operators

git-svn-id: https://hyracks.googlecode.com/svn/branches/fullstack_asterix_stabilization@2790 123451ca-8445-de46-9d55-352943316053
11 files changed
tree: 919ee70468ba46fa2bf2d51daefc5667e2cc4d9d
  1. algebricks/
  2. hivesterix/
  3. hyracks/
  4. pom.xml
  5. pregelix/