StreamingFileSink on EMR

[Bohinski, Kevin (Contractor)]

When running Flink 1.7 on EMR 5.21 using StreamingFileSink we see 
java.lang.UnsupportedOperationException: Recoverable writers on Hadoop are only 
supported for HDFS and for Hadoop version 2.7 or newer. EMR is showing Hadoop 
version 2.8.5. Is anyone else seeing this issue?