/**
* Do the encoding, but do not cache the encoded data.
*
* @return encoded data block with header and checksum
*/
public byte[] encodeData() {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
baos.write(HConstants.HFILEBLOCK_DUMMY_HEADER);
DataOutputStream out = new DataOutputStream(baos);
this.dataBlockEncoder.startBlockEncoding(encodingCtx, out);
ByteBuffer in = getUncompressedBuffer();
in.rewind();
int klength, vlength;
int tagsLength = 0;
long memstoreTS = 0L;
KeyValue kv = null;
while (in.hasRemaining()) {
int kvOffset = in.position();
klength = in.getInt();
vlength = in.getInt();
ByteBufferUtils.skip(in, klength + vlength);
if (this.meta.isIncludesTags()) {
tagsLength = ((in.get() & 0xff) << 8) ^ (in.get() & 0xff);
ByteBufferUtils.skip(in, tagsLength);
}
if (this.meta.isIncludesMvcc()) {
memstoreTS = ByteBufferUtils.readVLong(in);
}
kv =
new KeyValue(
in.array(),
kvOffset,
(int) KeyValue.getKeyValueDataStructureSize(klength, vlength, tagsLength));
kv.setSequenceId(memstoreTS);
this.dataBlockEncoder.encode(kv, encodingCtx, out);
}
BufferGrabbingByteArrayOutputStream stream = new BufferGrabbingByteArrayOutputStream();
baos.writeTo(stream);
this.dataBlockEncoder.endBlockEncoding(encodingCtx, out, stream.buf);
} catch (IOException e) {
throw new RuntimeException(
String.format(
"Bug in encoding part of algorithm %s. "
+ "Probably it requested more bytes than are available.",
toString()),
e);
}
return baos.toByteArray();
}
