@Override
public void open() throws HyracksDataException {
FileSplit split = splits[index];
RecordDescriptor desc = recordDescriptors[0];
IRecordReader reader;
try {
reader = createRecordReader(split.getLocalFile().getFile(), desc);
} catch (Exception e) {
throw new HyracksDataException(e);
}
if (desc == null) {
desc = recordDescriptors[0];
}
writer.open();
try {
while (true) {
Object[] record = new Object[desc.getFieldCount()];
if (!reader.read(record)) {
break;
}
writer.writeData(record);
}
} catch (Exception e) {
writer.fail();
throw new HyracksDataException(e);
} finally {
reader.close();
writer.close();
}
}
@Override
public void open() throws HyracksDataException {
accessor = new FrameTupleAccessor(inputRecDesc);
builder = new ArrayTupleBuilder(outputRecDesc.getFieldCount());
builderData = builder.getFieldData();
appender = new FrameTupleAppender(new VSizeFrame(ctx), true);
writer.open();
}
static void prepareData(
IHyracksTaskContext ctx,
List<IFrame> frameList,
int minDataSize,
int minRecordSize,
int maxRecordSize,
Map<Integer, String> specialData,
Map<Integer, String> keyValuePair)
throws HyracksDataException {
ArrayTupleBuilder tb = new ArrayTupleBuilder(RecordDesc.getFieldCount());
FrameTupleAppender appender = new FrameTupleAppender();
int datasize = 0;
if (specialData != null) {
for (Map.Entry<Integer, String> entry : specialData.entrySet()) {
tb.reset();
tb.addField(IntegerSerializerDeserializer.INSTANCE, entry.getKey());
tb.addField(UTF8StringSerializerDeserializer.INSTANCE, entry.getValue());
VSizeFrame frame =
new VSizeFrame(
ctx,
FrameHelper.calcAlignedFrameSizeToStore(
tb.getFieldEndOffsets().length, tb.getSize(), ctx.getInitialFrameSize()));
appender.reset(frame, true);
assertTrue(appender.append(tb.getFieldEndOffsets(), tb.getByteArray(), 0, tb.getSize()));
frameList.add(frame);
datasize += frame.getFrameSize();
}
keyValuePair.putAll(specialData);
}
VSizeFrame frame = new VSizeFrame(ctx, ctx.getInitialFrameSize());
appender.reset(frame, true);
while (datasize < minDataSize) {
tb.reset();
int key = GRandom.nextInt(minDataSize + 1);
if (!keyValuePair.containsKey(key)) {
String value = generateRandomRecord(minRecordSize, maxRecordSize);
tb.addField(IntegerSerializerDeserializer.INSTANCE, key);
tb.addField(UTF8StringSerializerDeserializer.INSTANCE, value);
if (!appender.append(tb.getFieldEndOffsets(), tb.getByteArray(), 0, tb.getSize())) {
frameList.add(frame);
datasize += frame.getFrameSize();
frame =
new VSizeFrame(
ctx,
FrameHelper.calcAlignedFrameSizeToStore(
tb.getFieldEndOffsets().length, tb.getSize(), ctx.getInitialFrameSize()));
appender.reset(frame, true);
assertTrue(appender.append(tb.getFieldEndOffsets(), tb.getByteArray(), 0, tb.getSize()));
}
keyValuePair.put(key, value);
}
}
if (appender.getTupleCount() > 0) {
frameList.add(frame);
}
}
public class DeletableFrameTupleAppenderTest {
DeletableFrameTupleAppender appender;
ISerializerDeserializer[] fields =
new ISerializerDeserializer[] {
IntegerSerializerDeserializer.INSTANCE, new UTF8StringSerializerDeserializer(),
};
RecordDescriptor recordDescriptor = new RecordDescriptor(fields);
ArrayTupleBuilder builder = new ArrayTupleBuilder(recordDescriptor.getFieldCount());
static final char TEST_CH = 'x';
int cap = 256;
@Before
public void initial() throws HyracksDataException {
appender = new DeletableFrameTupleAppender(recordDescriptor);
}
@Test
public void testClear() throws Exception {
ByteBuffer buffer = ByteBuffer.allocate(cap);
appender.clear(buffer);
assertTrue(appender.getBuffer() == buffer);
assertTrue(appender.getTupleCount() == 0);
assertTrue(appender.getContiguousFreeSpace() == cap - 4 - 4);
}
ByteBuffer makeAFrame(int capacity, int count, int deletedBytes) throws HyracksDataException {
ByteBuffer buffer = ByteBuffer.allocate(capacity);
int metaOffset = capacity - 4;
buffer.putInt(metaOffset, deletedBytes);
metaOffset -= 4;
buffer.putInt(metaOffset, count);
metaOffset -= 4;
for (int i = 0; i < count; i++, metaOffset -= 4) {
makeARecord(builder, i);
for (int x = 0; x < builder.getFieldEndOffsets().length; x++) {
buffer.putInt(builder.getFieldEndOffsets()[x]);
}
buffer.put(builder.getByteArray(), 0, builder.getSize());
assert (metaOffset > buffer.position());
buffer.putInt(metaOffset, buffer.position());
}
return buffer;
}
void makeARecord(ArrayTupleBuilder builder, int i) throws HyracksDataException {
builder.reset();
builder.addField(fields[0], i + 1);
builder.addField(fields[1], Utility.repeatString(TEST_CH, i + 1));
}
int assertTupleIsExpected(int i, int dataOffset) {
int lenStrMeta = UTF8StringUtil.getNumBytesToStoreLength(i);
int tupleLength = 2 * 4 + 4 + lenStrMeta + i + 1;
assertEquals(dataOffset, appender.getTupleStartOffset(i));
assertEquals(tupleLength, appender.getTupleLength(i));
assertEquals(dataOffset + 2 * 4, appender.getAbsoluteFieldStartOffset(i, 0));
assertEquals(4, appender.getFieldLength(i, 0));
assertEquals(
i + 1,
IntSerDeUtils.getInt(
appender.getBuffer().array(), appender.getAbsoluteFieldStartOffset(i, 0)));
assertEquals(dataOffset + 2 * 4 + 4, appender.getAbsoluteFieldStartOffset(i, 1));
assertEquals(lenStrMeta + i + 1, appender.getFieldLength(i, 1));
return tupleLength;
}
@Test
public void testReset() throws Exception {
ByteBuffer buffer = ByteBuffer.allocate(cap);
appender.reset(buffer);
assertTrue(appender.getBuffer() == buffer);
assertTrue(appender.getTupleCount() == 0);
assertTrue(appender.getContiguousFreeSpace() == cap - 4 - 4);
int count = 10;
int deleted = 7;
buffer = makeAFrame(cap, count, deleted);
int pos = buffer.position();
appender.reset(buffer);
assertTrue(appender.getBuffer() == buffer);
assertTrue(appender.getTupleCount() == count);
assertTrue(appender.getContiguousFreeSpace() == cap - 4 - 4 - count * 4 - pos);
assertTrue(appender.getTotalFreeSpace() == appender.getContiguousFreeSpace() + deleted);
int dataOffset = 0;
for (int i = 0; i < count; i++) {
dataOffset += assertTupleIsExpected(i, dataOffset);
}
}
@Test
public void testAppend() throws Exception {
int count = 10;
ByteBuffer bufferRead = makeAFrame(cap, count, 0);
DeletableFrameTupleAppender accessor = new DeletableFrameTupleAppender(recordDescriptor);
accessor.reset(bufferRead);
ByteBuffer bufferWrite = ByteBuffer.allocate(cap);
appender.clear(bufferWrite);
for (int i = 0; i < accessor.getTupleCount(); i++) {
appender.append(accessor, i);
}
for (int i = 0; i < bufferRead.capacity(); i++) {
assertEquals(bufferRead.get(i), bufferWrite.get(i));
}
}
@Test
public void testDelete() throws Exception {
int count = 10;
int deleteSpace = 0;
ByteBuffer buffer = makeAFrame(cap, count, deleteSpace);
appender.reset(buffer);
int freeSpace = appender.getContiguousFreeSpace();
for (int i = 0; i < appender.getTupleCount(); i++) {
deleteSpace += assertDeleteSucceed(i, freeSpace, deleteSpace);
int innerOffset = deleteSpace;
for (int j = i + 1; j < appender.getTupleCount(); j++) {
innerOffset += assertTupleIsExpected(j, innerOffset);
}
}
}
@Test
public void testResetAfterDelete() throws Exception {
testDelete();
appender.reset(appender.getBuffer());
assertEquals(cap - appender.getTupleCount() * 4 - 4 - 4, appender.getTotalFreeSpace());
}
int assertDeleteSucceed(int i, int freeSpaceBeforeDelete, int deleteSpace) {
int startOffset = appender.getTupleStartOffset(i);
int endOffset = appender.getTupleEndOffset(i);
int tupleLength = appender.getTupleLength(i);
appender.delete(i);
assertEquals(startOffset, appender.getTupleStartOffset(i));
assertEquals(-endOffset, appender.getTupleEndOffset(i));
assertEquals(-tupleLength, appender.getTupleLength(i));
assertEquals(freeSpaceBeforeDelete, appender.getContiguousFreeSpace());
assertEquals(deleteSpace + tupleLength + freeSpaceBeforeDelete, appender.getTotalFreeSpace());
return tupleLength;
}
@Test
public void testAppendAndDelete() throws Exception {
int cap = 1024;
int count = 10;
int deleteSpace = 0;
ByteBuffer buffer = makeAFrame(cap, count, deleteSpace);
int dataOffset = buffer.position();
appender.reset(buffer);
int freeSpace = appender.getContiguousFreeSpace();
int[] deleteSet = new int[] {1, 3, 5};
for (int i = 0; i < deleteSet.length; i++) {
deleteSpace += assertDeleteSucceed(deleteSet[i], freeSpace, deleteSpace);
}
ByteBuffer bufferRead = makeAFrame(cap, count * 2, 0);
DeletableFrameTupleAppender accessor = new DeletableFrameTupleAppender(recordDescriptor);
accessor.reset(bufferRead);
for (int i = count; i < accessor.getTupleCount(); i++) {
int id = appender.append(accessor, i);
dataOffset += assertTupleIsExpected(i, dataOffset);
assertEquals(i, id);
}
appender.reOrganizeBuffer();
dataOffset = 0;
for (int i = 0; i < appender.getTupleCount(); i++) {
if (ArrayUtils.contains(deleteSet, i)) {
continue;
}
dataOffset += assertTupleIsExpected(i, dataOffset);
}
}
@Test
public void testReOrganizeBuffer() throws Exception {
int count = 10;
testDelete();
appender.reOrganizeBuffer();
ByteBuffer bufferRead = makeAFrame(cap, count, 0);
DeletableFrameTupleAppender accessor = new DeletableFrameTupleAppender(recordDescriptor);
accessor.reset(bufferRead);
for (int i = 0; i < accessor.getTupleCount(); i++) {
appender.append(accessor, i);
}
for (int i = 0; i < bufferRead.capacity(); i++) {
assertEquals(bufferRead.get(i), appender.getBuffer().get(i));
}
}
}