COmpile java error

[humehta]

Command:

gradle clean dist -Pcdhversion=cdh4

Error:
Task :dga-giraph:compileJava FAILED
/home/hduser/distributed-graph-analytics/dga-giraph/src/main/java/com/soteradefense/dga/DGAYarnRunner.java:21: error: package org.apache.hadoop.yarn.conf does not exist
import org.apache.hadoop.yarn.conf.YarnConfiguration;
^
/home/hduser/distributed-graph-analytics/dga-giraph/src/main/java/com/soteradefense/dga/DGAYarnRunner.java:28: error: cannot find symbol
UserGroupInformation.createRemoteUser(YarnConfiguration.DEFAULT_NM_NONSECURE_MODE_LOCAL_USER).doAs(new PrivilegedAction() {
^
symbol: variable YarnConfiguration
location: class DGAYarnRunner
Note: /home/hduser/distributed-graph-analytics/dga-giraph/src/main/java/com/soteradefense/dga/io/formats/DGAVertexOutputFormat.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
2 errors

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':dga-giraph:compileJava'.

Please help