java.net.ConnectException: 拒绝连接； For more details see: http://wiki.apache.org/hadoop/ConnectionRefu

java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

可能是没睡醒的原因，一打开虚拟机就想着把hive启动起来，结果，出现面前的错误让我猝不及防，仔细看看

Exception in thread “main” java.lang.RuntimeException: java.net.ConnectException: Call From hadoop102/192.168.138.130 to hadoop102:9000 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

原因：
再启动hive之前没有启动hdfs

解决办法

只需要将hadoop集群启动再启动hive即可成功