Github user poornachandra commented on the issue:
https://github.com/apache/incubator-tephra/pull/67
@ankitsinghal Since HBase-2.0 needs Java 8, let's try changing the compiler
for only HBase-2.0 compat module to use Java 8. We can still keep the other
modules as Java 7. I haven't tried it out myself. But I think it should work.
Right now, we run Travis tests using both Java 7 and Java 8 for all
modules. We can restrict HBase-2.0 compat module tests to run only for Java 8.---
