HBase master crashed during/post EU on an IOP4.2.5/HDP2.6 migrated cluster

HBase in IOP 4.2.5 is of higher version than the one shipped in HDP 2.6. HBase master appeared as if it had started according to the Ambari action log but later crashed with error:

2017-07-05 09:28:08,952 FATAL [hats1:16000.activeMasterManager] master.HMaster: Failed to become active masterjava.io.IOException: The procedure class org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure must be accessible and have an empty constructorat org.apache.hadoop.hbase.procedure2.Procedure.newInstance(Procedure.java:663)at org.apache.hadoop.hbase.procedure2.Procedure.convert(Procedure.java:789)at org.apache.hadoop.hbase.procedure2.store.wal.ProcedureWALFormatReader.read(ProcedureWALFormatReader.java:111)at org.apache.hadoop.hbase.procedure2.store.wal.ProcedureWALFormat.load(ProcedureWALFormat.java:81)at org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.load(WALProcedureStore.java:374)at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.load(ProcedureExecutor.java:297)at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.start(ProcedureExecutor.java:464)at org.apache.hadoop.hbase.master.HMaster.startProcedureExecutor(HMaster.java:1297)at org.apache.hadoop.hbase.master.HMaster.startServiceThreads(HMaster.java:1196)