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java.net.UnknownHostException: hadoop1
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java.net.UnknownHostException: ha-nn
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java.net.UnknownHostException: ha-nn
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java.net.UnknownHostException: ha-nn
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java.net.UnknownHostException: ha-nn
java.lang.IllegalArgumentException: java.net.UnknownHostException: hadoop-eu-1-m	at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:377)	at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:237)	at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:141)