Package org.apache.hadoop.mapred

Examples of org.apache.hadoop.mapred.InputSplit

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    // put multiple splits with multiple copies in the same location
    String[] locations = {"common", "common", "common"};
    int numSplits = 3;
    InputSplit[] mockSplits = new InputSplit[numSplits];
    for (int i=0; i<numSplits; i++) {
      InputSplit mockSplit = mock(InputSplit.class);
      when(mockSplit.getLength()).thenReturn(10*1000*1000l);
      when(mockSplit.getLocations()).thenReturn(locations);
      mockSplits[i] = mockSplit;
    }
    when(mockWrappedFormat.getSplits((JobConf)anyObject(), anyInt())).thenReturn(mockSplits);
   
    format.setDesiredNumberOfSplits(1);
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    format.setInputFormat(mockWrappedFormat);
   
    // put multiple splits with multiple copies in the same location
    int numSplits = 3;
    InputSplit[] mockSplits = new InputSplit[numSplits];
    InputSplit mockSplit1 = mock(InputSplit.class);
    when(mockSplit1.getLength()).thenReturn(10*1000*1000l);
    when(mockSplit1.getLocations()).thenReturn(null);
    mockSplits[0] = mockSplit1;
    InputSplit mockSplit2 = mock(InputSplit.class);
    when(mockSplit2.getLength()).thenReturn(10*1000*1000l);
    when(mockSplit2.getLocations()).thenReturn(new String[] {null});
    mockSplits[1] = mockSplit2;
    InputSplit mockSplit3 = mock(InputSplit.class);
    when(mockSplit3.getLength()).thenReturn(10*1000*1000l);
    when(mockSplit3.getLocations()).thenReturn(new String[] {null, null});
    mockSplits[2] = mockSplit3;

    when(mockWrappedFormat.getSplits((JobConf)anyObject(), anyInt())).thenReturn(mockSplits);
   
    format.setDesiredNumberOfSplits(1);
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  public void testSerializedPayload() throws IOException {

    Configuration conf = new Configuration(false);
    conf.setBoolean(MRJobConfig.MR_TEZ_INPUT_INITIALIZER_SERIALIZE_EVENT_PAYLAOD, true);
    ByteString confByteString = MRHelpers.createByteStringFromConf(conf);
    InputSplit split1 = new InputSplitForTest(1);
    InputSplit split2 = new InputSplitForTest(2);
    MRSplitProto proto1 = MRHelpers.createSplitProto(split1);
    MRSplitProto proto2 = MRHelpers.createSplitProto(split2);
    MRSplitsProto.Builder splitsProtoBuilder = MRSplitsProto.newBuilder();
    splitsProtoBuilder.addSplits(proto1);
    splitsProtoBuilder.addSplits(proto2);
    MRInputUserPayloadProto.Builder payloadProto = MRInputUserPayloadProto.newBuilder();
    payloadProto.setSplits(splitsProtoBuilder.build());
    payloadProto.setConfigurationBytes(confByteString);
    byte[] userPayload = payloadProto.build().toByteArray();

    TezRootInputInitializerContext context = new TezRootInputInitializerContextForTest(userPayload);
    MRInputSplitDistributor splitDist = new MRInputSplitDistributor();

    List<Event> events = splitDist.initialize(context);

    assertEquals(3, events.size());
    assertTrue(events.get(0) instanceof RootInputUpdatePayloadEvent);
    assertTrue(events.get(1) instanceof RootInputDataInformationEvent);
    assertTrue(events.get(2) instanceof RootInputDataInformationEvent);

    RootInputDataInformationEvent diEvent1 = (RootInputDataInformationEvent) (events.get(1));
    RootInputDataInformationEvent diEvent2 = (RootInputDataInformationEvent) (events.get(2));

    assertNull(diEvent1.getDeserializedUserPayload());
    assertNull(diEvent2.getDeserializedUserPayload());

    assertNotNull(diEvent1.getUserPayload());
    assertNotNull(diEvent2.getUserPayload());

    MRSplitProto event1Proto = MRSplitProto.parseFrom(diEvent1.getUserPayload());
    InputSplit is1 = MRInput.getOldSplitDetailsFromEvent(event1Proto, new Configuration());
    assertTrue(is1 instanceof InputSplitForTest);
    assertEquals(1, ((InputSplitForTest) is1).identifier);

    MRSplitProto event2Proto = MRSplitProto.parseFrom(diEvent2.getUserPayload());
    InputSplit is2 = MRInput.getOldSplitDetailsFromEvent(event2Proto, new Configuration());
    assertTrue(is2 instanceof InputSplitForTest);
    assertEquals(2, ((InputSplitForTest) is2).identifier);
  }
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  public void testDeserializedPayload() throws IOException {

    Configuration conf = new Configuration(false);
    conf.setBoolean(MRJobConfig.MR_TEZ_INPUT_INITIALIZER_SERIALIZE_EVENT_PAYLAOD, false);
    ByteString confByteString = MRHelpers.createByteStringFromConf(conf);
    InputSplit split1 = new InputSplitForTest(1);
    InputSplit split2 = new InputSplitForTest(2);
    MRSplitProto proto1 = MRHelpers.createSplitProto(split1);
    MRSplitProto proto2 = MRHelpers.createSplitProto(split2);
    MRSplitsProto.Builder splitsProtoBuilder = MRSplitsProto.newBuilder();
    splitsProtoBuilder.addSplits(proto1);
    splitsProtoBuilder.addSplits(proto2);
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    split.write(out);
  }
 
  InputSplit readWrappedSplit(DataInput in, Class<? extends InputSplit> clazz)
      throws IOException {
    InputSplit split;
    try {
      split = ReflectionUtils.newInstance(clazz, conf);
    } catch (Exception e) {
      throw new TezUncheckedException(e);
    }
    split.readFields(in);
    return split;
  }
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    }

    Deserializer<InputSplit> deserializer = serializationFactory
        .getDeserializer(clazz);
    deserializer.open(splitProto.getSplitBytes().newInput());
    InputSplit inputSplit = deserializer.deserialize(null);
    deserializer.close();
    return inputSplit;
  }
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    // Initialize input in-line since it sets parameters which may be used by the processor.
    // Done only for MRInput.
    // TODO use new method in MRInput to get required info
    //input.initialize(job, master);
   
    InputSplit inputSplit = input.getOldInputSplit();
   
    updateJobWithSplit(job, inputSplit);

    RecordReader in = new OldRecordReader(input);
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    outMeta.close();
  }

  public static void generateInputSplit(FileSystem fs, Path workDir, JobConf jobConf, Path mapInput) throws IOException {
    jobConf.setInputFormat(SequenceFileInputFormat.class);
    InputSplit split = createInputSplit(fs, workDir, jobConf, mapInput);
    writeSplitFiles(fs, jobConf, split);
  }
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      long seed = r.nextLong();
      r.setSeed(seed);
      LOG.debug("seed: " + seed);
      // shuffle splits
      for (int i = 0; i < splits.length; ++i) {
        InputSplit tmp = splits[i];
        int j = r.nextInt(splits.length);
        splits[i] = splits[j];
        splits[j] = tmp;
      }
      // our target rate is in terms of the maximum number of sample splits,
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      } catch (HiveException e) {
        throw new RuntimeException(
            "Unable to get metadata for input table split" + split.getPath());
      }
    }
    InputSplit retA[] = newSplits.toArray((new FileSplit[newSplits.size()]));
    l4j.info("Number of input splits: " + splits.length + " new input splits: "
        + retA.length + ", sum of split lengths: " + sumSplitLengths);
    return retA;
  }
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