PIG-3271: POSplit ignoring error from input processing giving empty results

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1467055 13f79535-47bb-0310-9956-ffa450edef68
PIG-3271: POSplit ignoring error from input processing giving empty results

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1467056 13f79535-47bb-0310-9956-ffa450edef68