public String getHdfsScratchDirURIString() {
    return hdfsScratchDirURIString;
  }
Create a given path if it doesn't exist.

@param conf
@param path
@param permission
@param isLocal
@param isCleanUp
@return
@throws IOException
ql/src/java/org/apache/hadoop/hive/ql/session/SessionState.java