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2019-10-10 19:49:37,799 FATAL [master:16000.activeMasterManager] master.HMaster: Unhandled exception. Starting shutdown.
java.net.ConnectException: Call From master/172.16.1.2 to master:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
这个问题主要在于,把集群端口号写错了
<property>
<name>fs.defaultFS</name>
<value>hdfs://master:8020</value>
</property>
起初这里的端口号写成了9000
<property>
<name>hbase.rootdir</name>
<value>hdfs://master:8020/HBase</value>
</property>
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