asfimport commented on issue #398: URL: https://github.com/apache/parquet-format/issues/398#issuecomment-2184154063
[Yujiang Zhong](https://issues.apache.org/jira/browse/PARQUET-2160?#comment-17575529) / @zhongyujiang: > What about query performance? was it affected too since it now incurs an extra copy. @sunchao It does not add an extra copy actually, BytesInput#copy reads bytes from the input stream and constructs a ByteArrayBytesInput as return, these bytes will be wrapped as ByteByffer later to construct a ByteBufferInputStream. This is the same as the current process, just that bytes are read in advance. I had run some queries to test (not strict benchmark) and the results show that there is no performance loss. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
