oss native large file copy consume too much time which will eventually lead to client timeout because of no data transmit throughout native copy. change maxCopySize to 400MB, ensure only small medium size file use oss native copy to avoid connection reset by peer.
oss native large file copy consume too much time which will eventually lead to client timeout because of no data transmit throughout native copy. change maxCopySize to 400MB, ensure only small medium size file use oss native copy to avoid connection reset by peer.

Signed-off-by: yaoyao.xyy <04bbe6dfac7bf21e4c3c947a4d22ab9100de3b7f@alibaba-inc.com>

jzwlqx/aliyungo