A quick question about HA support in Knox

[Wei Yan]

Hi, guys,

Does Knox support YARN and HDFS HA? I checked the user guide
<https://knox.apache.org/books/knox-0-9-1/user-guide.html#Default+Service+HA+support>,
and it mentioned about (WEBHCAT, HBASE, OOZIE). Not sure whether it works
for YARN and HDFS HA.

-Wei