I use it to prepare HFile using my custom mapper emitting Put and HFileOutputFormat.configureIncrementalLoad(job, createHTable()) //connection to target table
and then bulk load data to table using LoadIncrementalHFiles P.S. HFileOutputFormat is also deprecated... so many changes... ((( 2014-11-03 0:41 GMT+03:00 Sean Busbey <bus...@cloudera.com>: > In the 0.94.x API, Put implemented Writable[1]. This meant that MR code, > like yours, could use it as a Key or Value between Mapper and Reducer. > > In 0.96 and later APIs, Put no longer directly implements Writable[2]. > Instead, HBase now includes a Hadoop Seriazliation implementation. > Normally, this would be configured via the TableMapReduceUtil class for > either a TableMapper or TableReducer. > > Presuming that the intention of your MR job is to have all the Puts write > to some HBase table, you should be able to follow the "write to HBase" part > of the examples for reading and writing HBase via mapreduce in the > reference guide[3]. > > Specifically, you should have your Driver call one of the > initTableReducerJob methods on TableMapReduceUtil, where it currently sets > the Mapper class for your application[4]. > > -Sean > > [1]: > > http://hbase.apache.org/0.94/apidocs/org/apache/hadoop/hbase/client/Put.html > [2]: > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Put.html > [3]: http://hbase.apache.org/book/mapreduce.example.html > [4]: > > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/mapreduce/TableMapReduceUtil.html > > > On Sun, Nov 2, 2014 at 3:02 PM, Serega Sheypak <serega.shey...@gmail.com> > wrote: > > > 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? > > > > > > -- > Sean >
