xiebin created ORC-1473:
---------------------------
Summary: Zero-copy
Key: ORC-1473
URL: https://issues.apache.org/jira/browse/ORC-1473
Project: ORC
Issue Type: Bug
Components: Java, Reader
Reporter: xiebin
I found two bugs
# org.apache.orc.impl.RecordReaderUtils#zeroCopyReadRanges
{code:java}
ByteBuffer copy = currentBuffer.duplicate();
copy.position((int) (current.getOffset() - currentOffset)); {code}
if currentBuffer position is not 0, copy.position() will set a uncorrect
position.
I think we should use slice() replace duplicate().
# org.apache.orc.impl.ZeroCopyShims.ZeroCopyAdapter#releaseBuffer
The parameter `buffer` is not the original buffer from hdfs reading. It is the
slice or duplicate of the original buffer.
This bug is reported at ORC-700.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
