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As advise by IBM Support "But even in Bulk Mode (ie TPT API) TDConnector when READING only uses
ncr::teradata::client::API::Connection::GetRow as opposes to ncr::teradata::client::API::Connection::GetBuffer.
This explain the big differences in performance when average record size is small and negligible differences when record size is big. Network packet with standard MTU is 1500 bytes.
At this stage, I can't see any configuration that we can do to improve the performance of TD Connector Bulk Read unless we switch to GetBuffer."
Will there be future plans for TD connector stage to use 'GetBuffer' when doing bulk read