Chia-Ping Tsai created OOZIE-3621:
-------------------------------------

             Summary: Make TestECPolicyDisabler work with Hadoop 3
                 Key: OOZIE-3621
                 URL: https://issues.apache.org/jira/browse/OOZIE-3621
             Project: Oozie
          Issue Type: Improvement
            Reporter: Chia-Ping Tsai


TestECPolicyDisabler is not compatible with hadoop 3. The following error 
messages are produced by command `mvn clean install -DskipTests 
-Dhadoop.version=3.1.0 -Dhadoop.majorversion=3 -Phadoop-3`

{quote}
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] 
/home/chia7712/oozie/tools/src/test/java/org/apache/oozie/tools/TestECPolicyDisabler.java:[50,71]
 getErasureCodingPolicy(org.apache.hadoop.fs.Path) in 
org.apache.oozie.tools.TestECPolicyDisabler.MockDistributedFileSystem cannot 
override getErasureCodingPolicy(org.apache.hadoop.fs.Path) in 
org.apache.hadoop.hdfs.DistributedFileSystem
  return type 
org.apache.hadoop.hdfs.protocol.SystemErasureCodingPolicies.ReplicationPolicy 
is not compatible with org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy
{quote}

The root cause is the method `getErasureCodingPolicy` was introduced in hadoop 
3 and the method signature is different to mock fs of TestECPolicyDisabler. 
Fortunately, all we want to test is the static method 'ECPolicyDisabler#check' 
so we can add a new argument to make it be able to check another method.



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