HBASE-16753 There is a mismatch between suggested Java version in hba…

…se-env.sh

Signed-off-by: Dima Spivak <dimaspivak@apache.org>

bin/hbase-config.sh

@@ -132,7 +132,7 @@ if [ -z "$JAVA_HOME" ]; then
 | Please download the latest Sun JDK from the Sun Java web site        |
 |     > http://www.oracle.com/technetwork/java/javase/downloads        |
 |                                                                      |
-| HBase requires Java 1.7 or later.                                    |
+| HBase requires Java 1.8 or later.                                    |
 +======================================================================+
 EOF
     exit 1

conf/hbase-env.cmd

@@ -18,7 +18,7 @@
 
 @rem Set environment variables here.
 
-@rem The java implementation to use.  Java 1.7+ required.
+@rem The java implementation to use.  Java 1.8+ required.
 @rem set JAVA_HOME=c:\apps\java
 
 @rem Extra Java CLASSPATH elements.  Optional.

conf/hbase-env.sh

@@ -24,8 +24,8 @@
 # so try to keep things idempotent unless you want to take an even deeper look
 # into the startup scripts (bin/hbase, etc.)
 
-# The java implementation to use.  Java 1.7+ required.
-# export JAVA_HOME=/usr/java/jdk1.6.0/
+# The java implementation to use.  Java 1.8+ required.
+# export JAVA_HOME=/usr/java/jdk1.8.0/
 
 # Extra Java CLASSPATH elements.  Optional.
 # export HBASE_CLASSPATH=

src/main/asciidoc/_chapters/configuration.adoc

@@ -729,7 +729,7 @@ The following lines in the _hbase-env.sh_ file show how to set the `JAVA_HOME` e
 
 ----
 # The java implementation to use.
-export JAVA_HOME=/usr/java/jdk1.7.0/
+export JAVA_HOME=/usr/java/jdk1.8.0/
 
 # The maximum amount of heap to use. Default is left to JVM default.
 export HBASE_HEAPSIZE=4G