Srinivasu Majeti created HDFS-15916:
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Summary: Backward compatibility - Distcp fails from Hadoop 3 to
Hadoop 2 for snapshotdiff
Key: HDFS-15916
URL: https://issues.apache.org/jira/browse/HDFS-15916
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Srinivasu Majeti
Looks like when using distcp diff options between two snapshots from a hadoop 3
cluster to hadoop 2 cluster , we get below exception and seems to be break
backward compatibility due to new API introduction getSnapshotDiffReportListing.
hadoop distcp -diff s1 s2 -update src_cluster_path dst_cluster_path
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.RpcNoSuchMethodException):
Unknown method getSnapshotDiffReportListing called on
org.apache.hadoop.hdfs.protocol.ClientProtocol protocol
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