+ perl -pi -e 's#{{CMF_CONF_DIR}}#/etc/spark/conf.cloudera.spark_on_yarn/yarn-conf#g' /opt/cm-5.9.2/run/cloudera-scm-agent/process/ccdeploy_spark-conf_etcsparkconf.cloudera.spark_on_yarn_1615663591259519890/spark-conf/yarn-conf/yarn-site.xml

++ get_default_fs /opt/cm-5.9.2/run/cloudera-scm-agent/process/ccdeploy_spark-conf_etcsparkconf.cloudera.spark_on_yarn_1615663591259519890/spark-conf/yarn-conf

++ get_hadoop_conf /opt/cm-5.9.2/run/cloudera-scm-agent/process/ccdeploy_spark-conf_etcsparkconf.cloudera.spark_on_yarn_1615663591259519890/spark-conf/yarn-conf fs.defaultFS

++ local conf=/opt/cm-5.9.2/run/cloudera-scm-agent/process/ccdeploy_spark-conf_etcsparkconf.cloudera.spark_on_yarn_1615663591259519890/spark-conf/yarn-conf

++ local key=fs.defaultFS

++ '[' 1 == 1 ']'

++ /opt/cloudera/parcels/CDH-5.9.2-1.cdh5.9.2.p0.3/lib/hadoop/../../bin/hdfs --config /opt/cm-5.9.2/run/cloudera-scm-agent/process/ccdeploy_spark-conf_etcsparkconf.cloudera.spark_on_yarn_1615663591259519890/spark-conf/yarn-conf getconf -confKey fs.defaultFS

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/hadoop/hdfs/tools/GetConf : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:643)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)

at java.net.URLClassLoader.access$000(URLClassLoader.java:73)

at java.net.URLClassLoader$1.run(URLClassLoader.java:212)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:205)

at java.lang.ClassLoader.loadClass(ClassLoader.java:323)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)

at java.lang.ClassLoader.loadClass(ClassLoader.java:268)

Could not find the main class: org.apache.hadoop.hdfs.tools.GetConf. Program will exit.

+ DEFAULT_FS=

# java -version

java version "1.7.0_67"

Java(TM) SE Runtime Environment (build 1.7.0_67-b01)

Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

You have new mail in /var/spool/mail/root

--查看服务器java版本，发现jdk1.7.0_67没有再服务器管理之下：

[root@db01 ~]# alternatives --config java

There are 2 programs which provide 'java'.

Selection    Command

-----------------------------------------------

1           /usr/lib/jvm/jre-1.5.0-gcj/bin/java

*+ 2           /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

Enter to keep the current selection[+], or type selection number:

--将jdk1.7.0_67添加到服务器管理中：

[root@db01 ~]# alternatives --install /usr/bin/java java /opt/java/jdk1.7.0_67/bin/java 3

--再次查看服务器java版本信息，并且调整优先级最高的为jdk1.7.0_67：

[root@db01 ~]# alternatives --config java

There are 3 programs which provide 'java'.

Selection    Command

-----------------------------------------------

1           /usr/lib/jvm/jre-1.5.0-gcj/bin/java

*+ 2           /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

3           /opt/java/jdk1.7.0_67/bin/java

Enter to keep the current selection[+], or type selection number: 3

[root@db01 ~]# alternatives --config java

There are 3 programs which provide 'java'.

Selection    Command

-----------------------------------------------

1           /usr/lib/jvm/jre-1.5.0-gcj/bin/java

*  2           /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

+ 3           /opt/java/jdk1.7.0_67/bin/java

Enter to keep the current selection[+], or type selection number: