Running Hadoop 3 with Java 7 can result in some obscure error messages.
This change adds a warning to impala-config.sh when using Hadoop 3 with
Java 7.
Your development environment is configured for Hadoop 3 and Java 7.
Hadoop 3 requires at least Java 8. Your JAVA binary currently points
to /usr/lib/jvm/java-7-oracle-amd64/bin/java and reports the
following version:
java version "1.7.0_75"
Java(TM) SE Runtime Environment (build 1.7.0_75-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode)
It also catches failure of the minicluster start and prints an
additional warning when running with Hadoop 3 and Java 7.
Cherry-picks: not for 2.x
Change-Id: I4d8b505cf045eeb562d16ce4ce09da0712dc03eb
Reviewed-on: http://gerrit.cloudera.org:8080/10244
Reviewed-by: Michael Brown <mikeb@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>