Examples of org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec

Package org.apache.hadoop.hbase.codec.prefixtree

Examples of org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec

org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec
This class is created via reflection in DataBlockEncoding enum. Update the enum if class name or package changes.
PrefixTreeDataBlockEncoder implementation of DataBlockEncoder. This is the primary entry point for PrefixTree encoding and decoding. Encoding is delegated to instances of {@link PrefixTreeEncoder}, and decoding is delegated to instances of {@link org.apache.hadoop.hbase.codec.prefixtree.scanner.CellSearcher}. Encoder and decoder instances are created and recycled by static PtEncoderFactory and PtDecoderFactory.

    } while (seeker.next());
  }


  @Test
  public void testSeekWithRandomData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    ByteArrayOutputStream baosInMemory = new ByteArrayOutputStream();
    DataOutputStream userDataStream = new DataOutputStream(baosInMemory);
    int batchId = numBatchesWritten++;
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    generateRandomTestData(kvset, batchId, includesTag, encoder, blkEncodingCtx, userDataStream);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = baosInMemory.toByteArray();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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    verifySeeking(seeker, readBuffer, batchId);
  }


  @Test
  public void testSeekWithFixedData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    ByteArrayOutputStream baosInMemory = new ByteArrayOutputStream();
    DataOutputStream userDataStream = new DataOutputStream(baosInMemory);
    generateFixedTestData(kvset, batchId, includesTag, encoder, blkEncodingCtx, userDataStream);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = baosInMemory.toByteArray();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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  }


  @Test
  public void testSeekBeforeWithFixedData() throws Exception {
    formatRowNum = true;
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateFixedTestData(kvset, batchId, false, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE).build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    seeker.setCurrentBuffer(readBuffer);

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    assertArrayEquals(getRowKey(batchId, NUM_ROWS_PER_BATCH - 1), seeker.getKeyValue().getRow());
  }


  @Test
  public void testScanWithRandomData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    ByteBuffer dataBuffer = generateRandomTestData(kvset, numBatchesWritten++, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    seeker.setCurrentBuffer(readBuffer);
    KeyValue previousKV = null;

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    } while (seeker.next());
  }


  @Test
  public void testSeekWithRandomData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateRandomTestData(kvset, batchId, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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    verifySeeking(seeker, readBuffer, batchId);
  }


  @Test
  public void testSeekWithFixedData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateFixedTestData(kvset, batchId, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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  }


  @Test
  public void testSeekBeforeWithFixedData() throws Exception {
    formatRowNum = true;
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateFixedTestData(kvset, batchId, false, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE).build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    seeker.setCurrentBuffer(readBuffer);

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    assertArrayEquals(getRowKey(batchId, NUM_ROWS_PER_BATCH - 1), seeker.getKeyValue().getRow());
  }


  @Test
  public void testScanWithRandomData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    ByteBuffer dataBuffer = generateRandomTestData(kvset, numBatchesWritten++, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    seeker.setCurrentBuffer(readBuffer);
    KeyValue previousKV = null;

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    } while (seeker.next());
  }


  @Test
  public void testSeekWithRandomData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateRandomTestData(kvset, batchId, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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    verifySeeking(seeker, readBuffer, batchId);
  }


  @Test
  public void testSeekWithFixedData() throws Exception {
    PrefixTreeCodec encoder = new PrefixTreeCodec();
    int batchId = numBatchesWritten++;
    ByteBuffer dataBuffer = generateFixedTestData(kvset, batchId, includesTag);
    HFileContext meta = new HFileContextBuilder()
                        .withHBaseCheckSum(false)
                        .withIncludesMvcc(false)
                        .withIncludesTags(includesTag)
                        .withCompression(Algorithm.NONE)
                        .build();
    HFileBlockEncodingContext blkEncodingCtx = new HFileBlockDefaultEncodingContext(
        DataBlockEncoding.PREFIX_TREE, new byte[0], meta);
    encoder.encodeKeyValues(dataBuffer, blkEncodingCtx);
    EncodedSeeker seeker = encoder.createSeeker(KeyValue.COMPARATOR,
        encoder.newDataBlockDecodingContext(meta));
    byte[] onDiskBytes = blkEncodingCtx.getOnDiskBytesWithHeader();
    ByteBuffer readBuffer = ByteBuffer.wrap(onDiskBytes, DataBlockEncoding.ID_SIZE,
        onDiskBytes.length - DataBlockEncoding.ID_SIZE);
    verifySeeking(seeker, readBuffer, batchId);
  }

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Related Classes of org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec

org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher

org.apache.hadoop.hbase.codec.prefixtree.encode.PrefixTreeEncoder

org.apache.hadoop.hbase.codec.prefixtree.scanner.CellSearcher

org.apache.hadoop.hbase.io.encoding.HFileBlockDefaultDecodingContext

org.apache.hadoop.hbase.io.encoding.HFileBlockDefaultEncodingContext

org.apache.hadoop.hbase.io.encoding.TestPrefixTreeEncoding

org.apache.hadoop.hbase.KeyValue

java.io.DataOutputStream

java.nio.ByteBuffer

java.io.IOException

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