Zhuoyue Huang created HBASE-25387:
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Summary: TagRewriteCell's getSerializedSize() method gets the size
wrong
Key: HBASE-25387
URL: https://issues.apache.org/jira/browse/HBASE-25387
Project: HBase
Issue Type: Bug
Affects Versions: 3.0.0-alpha-1
Reporter: Zhuoyue Huang
Assignee: Zhuoyue Huang
We found that the serialized size of Cell is inconsistent with the size
actually written to ByteBuffer when the tag is empty.
{code:java}
Cell originalCell = ExtendedCellBuilderFactory.create(CellBuilderType.DEEP_COPY)
.setRow(Bytes.toBytes("row"))
.setFamily(Bytes.toBytes("family"))
.setQualifier(Bytes.toBytes("qualifier"))
.setTimestamp(HConstants.LATEST_TIMESTAMP)
.setType(KeyValue.Type.Maximum.getCode())
.setValue(Bytes.toBytes("value"))
.build();
ByteBuffer byteBuffer = ByteBuffer.allocate(100);
Cell cell = PrivateCellUtil.createCell(originalCell, "".getBytes());
int lengthWritten = KeyValueUtil.appendTo(cell, byteBuffer, 0, true);
System.out.println("Cell serializedSize: " + cell.getSerializedSize());
System.out.println("Bytes written to ByteBuffer: " + lengthWritten);
ByteArrayOutputStream output = new ByteArrayOutputStream(100);
PrivateCellUtil.writeCell(cell, output, true);
System.out.println("Bytes written to OutputStream: " + output.size());
{code}
Run the above code to see the following output
{code:java}
Cell serializedSize: 45
Bytes written to ByteBuffer: 43
Bytes written to OutputStream: 45
{code}
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