Hi, I'm migrating from CDH4 to CDH5 (hbase 0.98.6-cdh5.2.0) I had a unit test for mapper used to create HFile and bulk load later.
I've bumped maven deps from cdh4 to cdh5 0.98.6-cdh5.2.0 Now I've started to get exception java.lang.IllegalStateException: No applicable class implementing Serialization in conf at io.serializations: class org.apache.hadoop.hbase.client.Put at com.google.common.base.Preconditions.checkState(Preconditions.java:149) at org.apache.hadoop.mrunit.internal.io.Serialization.copy(Serialization.java:75) at org.apache.hadoop.mrunit.internal.io.Serialization.copy(Serialization.java:97) at org.apache.hadoop.mrunit.internal.output.MockOutputCollector.collect(MockOutputCollector.java:48) at org.apache.hadoop.mrunit.internal.mapreduce.AbstractMockContextWrapper$4.answer(AbstractMockContextWrapper.java:90) at org.mockito.internal.stubbing.StubbedInvocationMatcher.answer(StubbedInvocationMatcher.java:34) at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:91) at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29) at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38) at org.mockito.internal.creation.MethodInterceptorFilter.intercept(MethodInterceptorFilter.java:51) at org.apache.hadoop.mapreduce.Mapper$Context$$EnhancerByMockitoWithCGLIB$$ba4633fb.write(<generated>) And here is mapper code: public class ItemRecommendationHBaseMapper extends Mapper<LongWritable, BytesWritable, ImmutableBytesWritable, Put> { private final ImmutableBytesWritable hbaseKey = new ImmutableBytesWritable(); private final DynamicObjectSerDe<ItemRecommendation> serde = new DynamicObjectSerDe<ItemRecommendation>(ItemRecommendation.class); @Override protected void map(LongWritable key, BytesWritable value, Context context) throws IOException, InterruptedException { checkPreconditions(key, value); hbaseKey.set(Bytes.toBytes(key.get())); ItemRecommendation item = serde.deserialize(value.getBytes()); checkPreconditions(item); Put put = PutFactory.createPut(serde, item, getColumnFamily()); context.write(hbaseKey, put); //Exception here } Whatcan i do in order to make unit-test pass?