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Verify that UIDs and GIDs are consistent on Lustre clients. This must be done before installing Hadoop software. In particular,

the following users and groups should be checked:

users: hdfs, mapred, yarn, hbase, zookeeper

groups: hadoop, zookeeper, hbase

We used the following script to set up our Hadoop users prior to installing Hadoop:

VALUE=10000;

for i in hive hbase hdfs mapred yarn;