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ldap + hdfs 'No groups available for user hdfs'

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hi,

 

I had followed the document ldap groupmappings. when start the hdfs,I get the warning:

 

2016-02-04 18:30:06,397 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user mapred
2016-02-04 18:30:07,178 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:07,179 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:08,180 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:08,181 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:08,241 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user spark
2016-02-04 18:30:09,182 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:09,182 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:10,184 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs
2016-02-04 18:30:10,184 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user hdfs

how to fix it.

 

regards

 

 

rube

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