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  Hadoop connection failed or stuck processing
     
  Add Date : 2017-04-13      
         
         
         
  If the following error
java.io.IOException: Could not locate executable null \ bin \ winutils.exe in the Hadoop binaries.
at org.apache.hadoop.util.Shell.getQualifiedBinPath (Shell.java:318)
at org.apache.hadoop.util.Shell.getWinUtilsPath (Shell.java:333)
at org.apache.hadoop.util.Shell. (Shell.java:326)
at org.apache.hadoop.util.StringUtils. (StringUtils.java:76)
at org.apache.hadoop.security.Groups.parseStaticMapping (Groups.java:93)
at org.apache.hadoop.security.Groups. (Groups.java:77)
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService (Groups.java:240)
at org.apache.hadoop.security.UserGroupInformation.initialize (UserGroupInformation.java:255)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized (UserGroupInformation.java:232)
at org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject (UserGroupInformation.java:718)
at org.apache.hadoop.security.UserGroupInformation.getLoginUser (UserGroupInformation.java:703)
at org.apache.hadoop.security.UserGroupInformation.getCurrentUser (UserGroupInformation.java:605)
at org.apache.hadoop.hbase.security.User $ SecureHadoopUser. (User.java:262)
at org.apache.hadoop.hbase.security.User $ SecureHadoopUser. (User.java:258)
at org.apache.hadoop.hbase.security.User.getCurrent (User.java:160)
at org.apache.hadoop.hbase.security.UserProvider.getCurrent (UserProvider.java:89)
at org.apache.hadoop.hbase.client.HConnectionManager.createConnection (HConnectionManager.java:330)
at com.tracker.common.db.simplehbase.connection.HbaseUtils.createHConnection (HbaseUtils.java:33)
at com.tracker.common.db.simplehbase.connection.HConnectionPool.initHConnectionPool (HConnectionPool.java:54)
at com.tracker.common.db.simplehbase.connection.HConnectionPool.initHConnectionPool (HConnectionPool.java:38)
at com.tracker.data.api.handler.TestWebStatsService.main (TestWebStatsService.java:44)
Such mistakes, you need to add HADOOP_HOME environment variables, as follows:

If you're still stuck Hadoop connection, configure the C: \ Windows \ System32 \ drivers \ etc \ hosts file to add the agent
10.100.2.92 dev-hadoop1
10.100.2.93 dev-hadoop2
10.100.2.94 dev-hadoop3
It can successfully connect to Hadoop.
     
         
         
         
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