Package org.apache.howl.data

Examples of org.apache.howl.data.DefaultHowlRecord

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    for(int i = 0;i < 20;i++) {
      List<Object> objList = new ArrayList<Object>();

      objList.add(i);
      objList.add("strvalue" + i);
      writeRecords.add(new DefaultHowlRecord(objList));
    }

    partitionColumns = new ArrayList<HowlFieldSchema>();
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c1", Constants.INT_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c2", Constants.STRING_TYPE_NAME, "")));
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    for(int i = 0;i < 20;i++) {
      List<Object> objList = new ArrayList<Object>();

      objList.add(i);
      objList.add("strvalue" + i);
      writeRecords.add(new DefaultHowlRecord(objList));
    }

    partitionColumns = new ArrayList<HowlFieldSchema>();
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c1", Constants.INT_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c2", Constants.STRING_TYPE_NAME, "")));
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      objList.add(i);
      objList.add("strvalue" + i);
      objList.add("str2value" + i);

      writeRecords.add(new DefaultHowlRecord(objList));
    }

    Map<String, String> partitionMap = new HashMap<String, String>();
    partitionMap.put("part1", "p1value5");

    runMRCreate(partitionMap, partitionColumns, writeRecords, 10);

    tableSchema = getTableSchema();

    //assert that c3 has got added to table schema
    assertEquals(4, tableSchema.getFields().size());
    assertEquals("c1", tableSchema.getFields().get(0).getName());
    assertEquals("c2", tableSchema.getFields().get(1).getName());
    assertEquals("c3", tableSchema.getFields().get(2).getName());
    assertEquals("part1", tableSchema.getFields().get(3).getName());

    //Test that changing column data type fails
    partitionMap.clear();
    partitionMap.put("part1", "p1value6");

    partitionColumns = new ArrayList<HowlFieldSchema>();
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c1", Constants.INT_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c2", Constants.INT_TYPE_NAME, "")));

    IOException exc = null;
    try {
      runMRCreate(partitionMap, partitionColumns, writeRecords, 20);
    } catch(IOException e) {
      exc = e;
    }

    assertTrue(exc != null);
    assertTrue(exc instanceof HowlException);
    assertEquals(ErrorType.ERROR_SCHEMA_TYPE_MISMATCH, ((HowlException) exc).getErrorType());

    //Test that partition key is not allowed in data
    partitionColumns = new ArrayList<HowlFieldSchema>();
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c1", Constants.INT_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c2", Constants.STRING_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c3", Constants.STRING_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("part1", Constants.STRING_TYPE_NAME, "")));

    List<HowlRecord> recordsContainingPartitionCols = new ArrayList<HowlRecord>(20);
    for(int i = 0;i < 20;i++) {
      List<Object> objList = new ArrayList<Object>();

      objList.add(i);
      objList.add("c2value" + i);
      objList.add("c3value" + i);
      objList.add("p1value6");

      recordsContainingPartitionCols.add(new DefaultHowlRecord(objList));
    }

    exc = null;
    try {
      runMRCreate(partitionMap, partitionColumns, recordsContainingPartitionCols, 20);
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      objList.add(i);
      objList.add("co strvalue" + i);
      objList.add("co str2value" + i);

      writeRecords.add(new DefaultHowlRecord(objList));
    }

    Map<String, String> partitionMap = new HashMap<String, String>();
    partitionMap.put("part1", "p1value8");


    Exception exc = null;
    try {
      runMRCreate(partitionMap, partitionColumns, writeRecords, 10);
    } catch(IOException e) {
      exc = e;
    }

    assertTrue(exc != null);
    assertTrue(exc instanceof HowlException);
    assertEquals(ErrorType.ERROR_SCHEMA_COLUMN_MISMATCH, ((HowlException) exc).getErrorType());


    partitionColumns = new ArrayList<HowlFieldSchema>();
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c1", Constants.INT_TYPE_NAME, "")));
    partitionColumns.add(HowlSchemaUtils.getHowlFieldSchema(new FieldSchema("c2", Constants.STRING_TYPE_NAME, "")));

    writeRecords = new ArrayList<HowlRecord>();

    for(int i = 0;i < 10;i++) {
      List<Object> objList = new ArrayList<Object>();

      objList.add(i);
      objList.add("co strvalue" + i);

      writeRecords.add(new DefaultHowlRecord(objList));
    }

    runMRCreate(partitionMap, partitionColumns, writeRecords, 10);

    //Read should get 10 + 20 + 10 + 10 + 20 rows
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    rec_1.add( new Double(5.3D));
    rec_1.add( new String("howl and hadoop"));
    rec_1.add( null);
    rec_1.add( null);

    HowlRecord tup_1 = new DefaultHowlRecord(rec_1);

    List<Object> rec_2 = new ArrayList<Object>(8);
    rec_2.add( new Byte("100"));
    rec_2.add( new Short("200"));
    rec_2.add( new Integer(123));
    rec_2.add( new Long(1000L));
    rec_2.add( new Double(5.3D));
    rec_2.add( new String("howl and hadoop"));
    rec_2.add( null);
    rec_2.add( null);
    HowlRecord tup_2 = new DefaultHowlRecord(rec_2);

    return  new HowlRecord[]{tup_1,tup_2};

  }
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    rec_1.add(new Byte("123"));
    rec_1.add( new Integer(789));
    rec_1.add( new Double(5.3D));
    rec_1.add( new String("howl and hadoop"));
    rec_1.add( null);
    HowlRecord tup_1 = new DefaultHowlRecord(rec_1);

    List<Object> rec_2 = new ArrayList<Object>(8);
    rec_2.add( new Byte("100"));
    rec_2.add( new Integer(123));
    rec_2.add( new Double(5.3D));
    rec_2.add( new String("howl and hadoop"));
    rec_2.add( null);
    HowlRecord tup_2 = new DefaultHowlRecord(rec_2);

    return  new HowlRecord[]{tup_1,tup_2};

  }
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    rec_1.add( new Double(5.3D));
    rec_1.add( null); // new column
    rec_1.add( new String("howl and hadoop"));
    rec_1.add( new Byte("123"));
    rec_1.add( null);
    HowlRecord tup_1 = new DefaultHowlRecord(rec_1);

    List<Object> rec_2 = new ArrayList<Object>(7);

    rec_2.add( new Integer(123));
    rec_2.add( new String("first-part"));
    rec_2.add( new Double(5.3D));
    rec_2.add(null);
    rec_2.add( new String("howl and hadoop"));
    rec_2.add( new Byte("100"));
    rec_2.add( null);
    HowlRecord tup_2 = new DefaultHowlRecord(rec_2);

    return  new HowlRecord[]{tup_1,tup_2};

  }
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    int i = 0;
    for(HowlFieldSchema fSchema : computedSchema.getFields()){
      outgoing.add(getJavaObj(tuple.get(i++), fSchema));
    }
    try {
      writer.write(null, new DefaultHowlRecord(outgoing));
    } catch (InterruptedException e) {
      throw new BackendException("Error while writing tuple: "+tuple, PigHowlUtil.PIG_EXCEPTION_CODE, e);
    }
  }
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      else {
        outList.add(partValues.get(colName));
      }

    }
    return new DefaultHowlRecord(outList);
  }
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     */
    for(String colName : desiredColNames){
      Integer idx = dataSchema.getPosition(colName);
      howlRecord.add( idx != null ? data.get(idx) : partVals.get(colName));
    }
    return new DefaultHowlRecord(howlRecord);
  }
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Related Classes of org.apache.howl.data.DefaultHowlRecord

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  • org.apache.howl.mapreduce.TestHowlPartitioned
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  • org.apache.howl.rcfile.RCFileInputDriver
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