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This patch adds two new hint styles: 1. Traditional commented hint: /* +hint1,hint2,hint3 */ 2. End-of-line commented hint: -- +hint1,hint2,hint3\n We now preserve hints when creating views. We always use the end-of-line commented hint style to allow Hive to read hinted views created by Impala. Hive does not support traditional /* */ comments, and attempts to parse /*+ */ as hints, failing with a parse error on unrecognized hints. This patch also changes Impala to only issue a warning for unrecognized hints instead of throwing an error. This allows Impala to run against hinted views created by Hive. Change-Id: I6e8352442e763c0029f72c17363caa087572dca0 Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4235 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: jenkins Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4361