Java Code Examples for org.apache.hadoop.hive.ql.io.orc.OrcStruct#createObjectInspector()

The following examples show how to use org.apache.hadoop.hive.ql.io.orc.OrcStruct#createObjectInspector() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: OrcStorage.java From spork with Apache License 2.0

5 votes

@Override
public void setLocation(String location, Job job) throws IOException {
    Properties p = UDFContext.getUDFContext().getUDFProperties(this.getClass());
    if (!UDFContext.getUDFContext().isFrontend()) {
        typeInfo = (TypeInfo)ObjectSerializer.deserialize(p.getProperty(signature + SchemaSignatureSuffix));
    } else if (typeInfo == null) {
        typeInfo = getTypeInfo(location, job);
    }
    if (typeInfo != null && oi == null) {
        oi = OrcStruct.createObjectInspector(typeInfo);
    }
    if (!UDFContext.getUDFContext().isFrontend()) {
        if (p.getProperty(signature + RequiredColumnsSuffix) != null) {
            mRequiredColumns = (boolean[]) ObjectSerializer.deserialize(p
                    .getProperty(signature + RequiredColumnsSuffix));
            job.getConfiguration().setBoolean(ColumnProjectionUtils.READ_ALL_COLUMNS, false);
            job.getConfiguration().set(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR,
                    getReqiredColumnIdString(mRequiredColumns));
            if (p.getProperty(signature + SearchArgsSuffix) != null) {
                // Bug in setSearchArgument which always expects READ_COLUMN_NAMES_CONF_STR to be set
                job.getConfiguration().set(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR,
                        getReqiredColumnNamesString(getSchema(location, job), mRequiredColumns));
            }
        } else if (p.getProperty(signature + SearchArgsSuffix) != null) {
            // Bug in setSearchArgument which always expects READ_COLUMN_NAMES_CONF_STR to be set
            job.getConfiguration().set(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR,
                    getReqiredColumnNamesString(getSchema(location, job)));
        }
        if (p.getProperty(signature + SearchArgsSuffix) != null) {
            job.getConfiguration().set(SARG_PUSHDOWN, p.getProperty(signature + SearchArgsSuffix));
        }

    }
    FileInputFormat.setInputPaths(job, location);
}

Example 2

Source File: PutORCTest.java From nifi with Apache License 2.0

5 votes

private void verifyORCUsers(final Path orcUsers, final int numExpectedUsers, BiFunction<List<Object>, Integer, Void> assertFunction) throws IOException {
    Reader reader = OrcFile.createReader(orcUsers, OrcFile.readerOptions(testConf));
    RecordReader recordReader = reader.rows();

    TypeInfo typeInfo =
            TypeInfoUtils.getTypeInfoFromTypeString("struct<name:string,favorite_number:int,favorite_color:string,scale:double>");
    StructObjectInspector inspector = (StructObjectInspector)
            OrcStruct.createObjectInspector(typeInfo);

    int currUser = 0;
    Object nextRecord = null;
    while ((nextRecord = recordReader.next(nextRecord)) != null) {
        Assert.assertNotNull(nextRecord);
        Assert.assertTrue("Not an OrcStruct", nextRecord instanceof OrcStruct);
        List<Object> x = inspector.getStructFieldsDataAsList(nextRecord);

        if (assertFunction == null) {
            assertEquals("name" + currUser, x.get(0).toString());
            assertEquals(currUser, ((IntWritable) x.get(1)).get());
            assertEquals("blue" + currUser, x.get(2).toString());
            assertEquals(10.0 * currUser, ((DoubleWritable) x.get(3)).get(), Double.MIN_VALUE);
        } else {
            assertFunction.apply(x, currUser);
        }
        currUser++;
    }

    assertEquals(numExpectedUsers, currUser);
}

Example 3

Source File: TestConvertAvroToORC.java From localization_nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_primitive_record() throws Exception {
    GenericData.Record record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(10, 20L, true, 30.0f, 40, StandardCharsets.UTF_8.encode("Hello"), "World");

    DatumWriter<GenericData.Record> writer = new GenericDatumWriter<>(record.getSchema());
    DataFileWriter<GenericData.Record> fileWriter = new DataFileWriter<>(writer);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    fileWriter.create(record.getSchema(), out);
    fileWriter.append(record);
    // Put another record in
    record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(1, 2L, false, 3.0f, 4L, StandardCharsets.UTF_8.encode("I am"), "another record");
    fileWriter.append(record);
    // And one more
    record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(100, 200L, true, 300.0f, 400L, StandardCharsets.UTF_8.encode("Me"), "too!");
    fileWriter.append(record);
    fileWriter.flush();
    fileWriter.close();
    out.close();
    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test.avro");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS test_record (int INT, long BIGINT, boolean BOOLEAN, float FLOAT, double DOUBLE, bytes BINARY, string STRING)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("3", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    TypeInfo resultSchema = TestNiFiOrcUtils.buildPrimitiveOrcSchema();
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(resultSchema);

    // Check some fields in the first row
    Object intFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("int"));
    assertTrue(intFieldObject instanceof IntWritable);
    assertEquals(10, ((IntWritable) intFieldObject).get());
    Object stringFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("string"));
    assertTrue(stringFieldObject instanceof Text);
    assertEquals("World", stringFieldObject.toString());

}

Example 4

Source File: TestConvertAvroToORC.java From localization_nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_complex_record() throws Exception {

    Map<String, Double> mapData1 = new TreeMap<String, Double>() {{
        put("key1", 1.0);
        put("key2", 2.0);
    }};

    GenericData.Record record = TestNiFiOrcUtils.buildComplexAvroRecord(10, mapData1, "DEF", 3.0f, Arrays.asList(10, 20));

    DatumWriter<GenericData.Record> writer = new GenericDatumWriter<>(record.getSchema());
    DataFileWriter<GenericData.Record> fileWriter = new DataFileWriter<>(writer);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    fileWriter.create(record.getSchema(), out);
    fileWriter.append(record);

    // Put another record in
    Map<String, Double> mapData2 = new TreeMap<String, Double>() {{
        put("key1", 3.0);
        put("key2", 4.0);
    }};

    record = TestNiFiOrcUtils.buildComplexAvroRecord(null, mapData2, "XYZ", 4L, Arrays.asList(100, 200));
    fileWriter.append(record);

    fileWriter.flush();
    fileWriter.close();
    out.close();

    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS complex_record " +
            "(myInt INT, myMap MAP<STRING, DOUBLE>, myEnum STRING, myLongOrFloat UNIONTYPE<BIGINT, FLOAT>, myIntList ARRAY<INT>)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("2", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    TypeInfo resultSchema = TestNiFiOrcUtils.buildComplexOrcSchema();
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(resultSchema);

    // Check some fields in the first row
    Object intFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("myInt"));
    assertTrue(intFieldObject instanceof IntWritable);
    assertEquals(10, ((IntWritable) intFieldObject).get());

    // This is pretty awkward and messy. The map object is a Map (not a MapWritable) but the keys are writables (in this case Text)
    // and so are the values (DoubleWritables in this case).
    Object mapFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("myMap"));
    assertTrue(mapFieldObject instanceof Map);
    Map map = (Map) mapFieldObject;
    Object mapValue = map.get(new Text("key1"));
    assertNotNull(mapValue);
    assertTrue(mapValue instanceof DoubleWritable);
    assertEquals(1.0, ((DoubleWritable) mapValue).get(), Double.MIN_VALUE);

    mapValue = map.get(new Text("key2"));
    assertNotNull(mapValue);
    assertTrue(mapValue instanceof DoubleWritable);
    assertEquals(2.0, ((DoubleWritable) mapValue).get(), Double.MIN_VALUE);
}

Example 5

Source File: TestConvertAvroToORC.java From localization_nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_array_of_records() throws Exception {
    final Schema schema = new Schema.Parser().parse(new File("src/test/resources/array_of_records.avsc"));
    List<GenericRecord> innerRecords = new LinkedList<>();

    final GenericRecord outerRecord = new GenericData.Record(schema);

    Schema arraySchema = schema.getField("records").schema();
    Schema innerRecordSchema = arraySchema.getElementType();
    final GenericRecord innerRecord1 = new GenericData.Record(innerRecordSchema);
    innerRecord1.put("name", "Joe");
    innerRecord1.put("age", 42);

    innerRecords.add(innerRecord1);

    final GenericRecord innerRecord2 = new GenericData.Record(innerRecordSchema);
    innerRecord2.put("name", "Mary");
    innerRecord2.put("age", 28);

    innerRecords.add(innerRecord2);

    GenericData.Array<GenericRecord> array = new GenericData.Array<>(arraySchema, innerRecords);
    outerRecord.put("records", array);

    final DatumWriter<GenericRecord> datumWriter = new GenericDatumWriter<>(schema);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try (DataFileWriter<GenericRecord> dataFileWriter = new DataFileWriter<>(datumWriter)) {
        dataFileWriter.create(schema, out);
        dataFileWriter.append(outerRecord);
    }
    out.close();

    // Build a flow file from the Avro record
    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS org_apache_nifi_outer_record " +
            "(records ARRAY<STRUCT<name:STRING, age:INT>>)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("1", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(NiFiOrcUtils.getOrcField(schema));

    // Verify the record contains an array
    Object arrayFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("records"));
    assertTrue(arrayFieldObject instanceof ArrayList);
    ArrayList<?> arrayField = (ArrayList<?>) arrayFieldObject;
    assertEquals(2, arrayField.size());

    // Verify the first element. Should be a record with two fields "name" and "age"
    Object element = arrayField.get(0);
    assertTrue(element instanceof OrcStruct);
    StructObjectInspector elementInspector = (StructObjectInspector) OrcStruct.createObjectInspector(NiFiOrcUtils.getOrcField(innerRecordSchema));
    Object nameObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("name"));
    assertTrue(nameObject instanceof Text);
    assertEquals("Joe", nameObject.toString());
    Object ageObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("age"));
    assertTrue(ageObject instanceof IntWritable);
    assertEquals(42, ((IntWritable) ageObject).get());

    // Verify the first element. Should be a record with two fields "name" and "age"
    element = arrayField.get(1);
    assertTrue(element instanceof OrcStruct);
    nameObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("name"));
    assertTrue(nameObject instanceof Text);
    assertEquals("Mary", nameObject.toString());
    ageObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("age"));
    assertTrue(ageObject instanceof IntWritable);
    assertEquals(28, ((IntWritable) ageObject).get());
}

Example 6

Source File: TestConvertAvroToORC.java From nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_primitive_record() throws Exception {
    GenericData.Record record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(10, 20L, true, 30.0f, 40, StandardCharsets.UTF_8.encode("Hello"), "World");

    DatumWriter<GenericData.Record> writer = new GenericDatumWriter<>(record.getSchema());
    DataFileWriter<GenericData.Record> fileWriter = new DataFileWriter<>(writer);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    fileWriter.create(record.getSchema(), out);
    fileWriter.append(record);
    // Put another record in
    record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(1, 2L, false, 3.0f, 4L, StandardCharsets.UTF_8.encode("I am"), "another record");
    fileWriter.append(record);
    // And one more
    record = TestNiFiOrcUtils.buildPrimitiveAvroRecord(100, 200L, true, 300.0f, 400L, StandardCharsets.UTF_8.encode("Me"), "too!");
    fileWriter.append(record);
    fileWriter.flush();
    fileWriter.close();
    out.close();
    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test.avro");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS test_record (int INT, long BIGINT, boolean BOOLEAN, float FLOAT, double DOUBLE, bytes BINARY, string STRING)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("3", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    TypeInfo resultSchema = TestNiFiOrcUtils.buildPrimitiveOrcSchema();
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(resultSchema);

    // Check some fields in the first row
    Object intFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("int"));
    assertTrue(intFieldObject instanceof IntWritable);
    assertEquals(10, ((IntWritable) intFieldObject).get());
    Object stringFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("string"));
    assertTrue(stringFieldObject instanceof Text);
    assertEquals("World", stringFieldObject.toString());

}

Example 7

Source File: TestConvertAvroToORC.java From nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_complex_record() throws Exception {

    Map<String, Double> mapData1 = new TreeMap<String, Double>() {{
        put("key1", 1.0);
        put("key2", 2.0);
    }};

    GenericData.Record record = TestNiFiOrcUtils.buildComplexAvroRecord(10, mapData1, "DEF", 3.0f, Arrays.asList(10, 20));

    DatumWriter<GenericData.Record> writer = new GenericDatumWriter<>(record.getSchema());
    DataFileWriter<GenericData.Record> fileWriter = new DataFileWriter<>(writer);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    fileWriter.create(record.getSchema(), out);
    fileWriter.append(record);

    // Put another record in
    Map<String, Double> mapData2 = new TreeMap<String, Double>() {{
        put("key1", 3.0);
        put("key2", 4.0);
    }};

    record = TestNiFiOrcUtils.buildComplexAvroRecord(null, mapData2, "XYZ", 4L, Arrays.asList(100, 200));
    fileWriter.append(record);

    fileWriter.flush();
    fileWriter.close();
    out.close();

    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS complex_record " +
            "(myInt INT, myMap MAP<STRING, DOUBLE>, myEnum STRING, myLongOrFloat UNIONTYPE<BIGINT, FLOAT>, myIntList ARRAY<INT>)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("2", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    TypeInfo resultSchema = TestNiFiOrcUtils.buildComplexOrcSchema();
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(resultSchema);

    // Check some fields in the first row
    Object intFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("myInt"));
    assertTrue(intFieldObject instanceof IntWritable);
    assertEquals(10, ((IntWritable) intFieldObject).get());

    Object mapFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("myMap"));
    assertTrue(mapFieldObject instanceof Map);
    Map map = (Map) mapFieldObject;
    Object mapValue = map.get(new Text("key1"));
    assertNotNull(mapValue);
    assertTrue(mapValue instanceof DoubleWritable);
    assertEquals(1.0, ((DoubleWritable) mapValue).get(), Double.MIN_VALUE);

    mapValue = map.get(new Text("key2"));
    assertNotNull(mapValue);
    assertTrue(mapValue instanceof DoubleWritable);
    assertEquals(2.0, ((DoubleWritable) mapValue).get(), Double.MIN_VALUE);
}

Example 8

Source File: TestConvertAvroToORC.java From nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_array_of_records() throws Exception {
    final Schema schema = new Schema.Parser().parse(new File("src/test/resources/array_of_records.avsc"));
    List<GenericRecord> innerRecords = new LinkedList<>();

    final GenericRecord outerRecord = new GenericData.Record(schema);

    Schema arraySchema = schema.getField("records").schema();
    Schema innerRecordSchema = arraySchema.getElementType();
    final GenericRecord innerRecord1 = new GenericData.Record(innerRecordSchema);
    innerRecord1.put("name", "Joe");
    innerRecord1.put("age", 42);

    innerRecords.add(innerRecord1);

    final GenericRecord innerRecord2 = new GenericData.Record(innerRecordSchema);
    innerRecord2.put("name", "Mary");
    innerRecord2.put("age", 28);

    innerRecords.add(innerRecord2);

    GenericData.Array<GenericRecord> array = new GenericData.Array<>(arraySchema, innerRecords);
    outerRecord.put("records", array);

    final DatumWriter<GenericRecord> datumWriter = new GenericDatumWriter<>(schema);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try (DataFileWriter<GenericRecord> dataFileWriter = new DataFileWriter<>(datumWriter)) {
        dataFileWriter.create(schema, out);
        dataFileWriter.append(outerRecord);
    }
    out.close();

    // Build a flow file from the Avro record
    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS org_apache_nifi_outer_record " +
            "(records ARRAY<STRUCT<name:STRING, age:INT>>)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("1", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(NiFiOrcUtils.getOrcField(schema));

    // Verify the record contains an array
    Object arrayFieldObject = inspector.getStructFieldData(o, inspector.getStructFieldRef("records"));
    assertTrue(arrayFieldObject instanceof ArrayList);
    ArrayList<?> arrayField = (ArrayList<?>) arrayFieldObject;
    assertEquals(2, arrayField.size());

    // Verify the first element. Should be a record with two fields "name" and "age"
    Object element = arrayField.get(0);
    assertTrue(element instanceof OrcStruct);
    StructObjectInspector elementInspector = (StructObjectInspector) OrcStruct.createObjectInspector(NiFiOrcUtils.getOrcField(innerRecordSchema));
    Object nameObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("name"));
    assertTrue(nameObject instanceof Text);
    assertEquals("Joe", nameObject.toString());
    Object ageObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("age"));
    assertTrue(ageObject instanceof IntWritable);
    assertEquals(42, ((IntWritable) ageObject).get());

    // Verify the first element. Should be a record with two fields "name" and "age"
    element = arrayField.get(1);
    assertTrue(element instanceof OrcStruct);
    nameObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("name"));
    assertTrue(nameObject instanceof Text);
    assertEquals("Mary", nameObject.toString());
    ageObject = elementInspector.getStructFieldData(element, elementInspector.getStructFieldRef("age"));
    assertTrue(ageObject instanceof IntWritable);
    assertEquals(28, ((IntWritable) ageObject).get());
}

Example 9

Source File: TestConvertAvroToORC.java From nifi with Apache License 2.0

4 votes

@Test
public void test_onTrigger_nested_complex_record() throws Exception {

    Map<String, List<Double>> mapData1 = new TreeMap<String, List<Double>>() {{
        put("key1", Arrays.asList(1.0, 2.0));
        put("key2", Arrays.asList(3.0, 4.0));
    }};

    Map<String, String> arrayMap11 = new TreeMap<String, String>() {{
        put("key1", "v1");
        put("key2", "v2");
    }};
    Map<String, String> arrayMap12 = new TreeMap<String, String>() {{
        put("key3", "v3");
        put("key4", "v4");
    }};

    GenericData.Record record = TestNiFiOrcUtils.buildNestedComplexAvroRecord(mapData1, Arrays.asList(arrayMap11, arrayMap12));

    DatumWriter<GenericData.Record> writer = new GenericDatumWriter<>(record.getSchema());
    DataFileWriter<GenericData.Record> fileWriter = new DataFileWriter<>(writer);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    fileWriter.create(record.getSchema(), out);
    fileWriter.append(record);

    // Put another record in
    Map<String, List<Double>> mapData2 = new TreeMap<String, List<Double>>() {{
        put("key1", Arrays.asList(-1.0, -2.0));
        put("key2", Arrays.asList(-3.0, -4.0));
    }};

    Map<String, String> arrayMap21 = new TreeMap<String, String>() {{
        put("key1", "v-1");
        put("key2", "v-2");
    }};
    Map<String, String> arrayMap22 = new TreeMap<String, String>() {{
        put("key3", "v-3");
        put("key4", "v-4");
    }};

    record = TestNiFiOrcUtils.buildNestedComplexAvroRecord(mapData2, Arrays.asList(arrayMap21, arrayMap22));
    fileWriter.append(record);

    fileWriter.flush();
    fileWriter.close();
    out.close();

    Map<String, String> attributes = new HashMap<String, String>() {{
        put(CoreAttributes.FILENAME.key(), "test");
    }};
    runner.enqueue(out.toByteArray(), attributes);
    runner.run();

    runner.assertAllFlowFilesTransferred(ConvertAvroToORC.REL_SUCCESS, 1);

    // Write the flow file out to disk, since the ORC Reader needs a path
    MockFlowFile resultFlowFile = runner.getFlowFilesForRelationship(ConvertAvroToORC.REL_SUCCESS).get(0);
    assertEquals("CREATE EXTERNAL TABLE IF NOT EXISTS nested_complex_record " +
            "(myMapOfArray MAP<STRING, ARRAY<DOUBLE>>, myArrayOfMap ARRAY<MAP<STRING, STRING>>)"
            + " STORED AS ORC", resultFlowFile.getAttribute(ConvertAvroToORC.HIVE_DDL_ATTRIBUTE));
    assertEquals("2", resultFlowFile.getAttribute(ConvertAvroToORC.RECORD_COUNT_ATTRIBUTE));
    assertEquals("test.orc", resultFlowFile.getAttribute(CoreAttributes.FILENAME.key()));
    byte[] resultContents = runner.getContentAsByteArray(resultFlowFile);
    FileOutputStream fos = new FileOutputStream("target/test1.orc");
    fos.write(resultContents);
    fos.flush();
    fos.close();

    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.getLocal(conf);
    Reader reader = OrcFile.createReader(new Path("target/test1.orc"), OrcFile.readerOptions(conf).filesystem(fs));
    RecordReader rows = reader.rows();
    Object o = rows.next(null);
    assertNotNull(o);
    assertTrue(o instanceof OrcStruct);
    TypeInfo resultSchema = TestNiFiOrcUtils.buildNestedComplexOrcSchema();
    StructObjectInspector inspector = (StructObjectInspector) OrcStruct.createObjectInspector(resultSchema);


    // check values
    Object myMapOfArray = inspector.getStructFieldData(o, inspector.getStructFieldRef("myMapOfArray"));
    assertTrue(myMapOfArray instanceof Map);
    Map map = (Map) myMapOfArray;
    Object mapValue = map.get(new Text("key1"));
    assertNotNull(mapValue);
    assertTrue(mapValue instanceof List);
    assertEquals(Arrays.asList(new DoubleWritable(1.0), new DoubleWritable(2.0)), mapValue);

    Object myArrayOfMap = inspector.getStructFieldData(o, inspector.getStructFieldRef("myArrayOfMap"));
    assertTrue(myArrayOfMap instanceof List);
    List list = (List) myArrayOfMap;
    Object el0 = list.get(0);
    assertNotNull(el0);
    assertTrue(el0 instanceof Map);
    assertEquals(new Text("v1"), ((Map) el0).get(new Text("key1")));
}