Our YARN application would benefit from maximal bandwidth on HDFS reads. But I'm unclear on how short-circuit reads are enabled. Are they on by default? Can our application check programmatically to see if the short-circuit read is enabled? Thanks, john
RE: https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/ShortCircuitLocalReads.html https://issues.apache.org/jira/browse/HDFS-347
