启动HBase时报错：
[root@master bin]# ./start-hbase.sh
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hbase/util/HBaseConfTool : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
running master, logging to /usr/local/software/hbase-2.0.0/logs/hbase-root-master-master.out
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hbase/master/HMaster : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
#localhost: ssh: Could not resolve hostname #localhost: Name or service not known
slave03: running regionserver, logging to /usr/local/software/hbase-2.0.0/bin/../logs/hbase-root-regionserver-slave03.out
slave01: running regionserver, logging to /usr/local/software/hbase-2.0.0/bin/../logs/hbase-root-regionserver-slave01.out
slave02: running regionserver, logging to /usr/local/software/hbase-2.0.0/bin/../logs/hbase-root-regionserver-slave02.out
slave01: Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hbase/regionserver/HRegionServer : Unsupported major.minor version 52.0
slave01: at java.lang.ClassLoader.defineClass1(Native Method)
slave01: at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
slave01: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
slave01: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
slave01: at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
slave01: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
slave01: at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
slave01: at java.security.AccessController.doPrivileged(Native Method)
slave01: at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
slave03: Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hbase/regionserver/HRegionServer : Unsupported major.minor version 52.0
slave03: at java.lang.ClassLoader.defineClass1(Native Method)
slave03: at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
slave03: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
slave03: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
slave03: at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
slave03: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
slave03: at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
slave03: at java.security.AccessController.doPrivileged(Native Method)
slave03: at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
slave02: Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hbase/regionserver/HRegionServer : Unsupported major.minor version 52.0
slave02: at java.lang.ClassLoader.defineClass1(Native Method)
slave02: at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
slave02: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
slave02: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
slave02: at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
slave02: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
slave02: at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
slave02: at java.security.AccessController.doPrivileged(Native Method)
slave02: at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[root@master bin]#
