[jira] [Created] (TRAFODION-647) LP Bug: 1371452 - allow user to set starting compress threshold value in odbc driver

["Alice Chen (JIRA)" <ji...@apache.org>]

Alice Chen created TRAFODION-647:
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             Summary: LP Bug: 1371452 - allow user to set starting compress threshold value in odbc driver
                 Key: TRAFODION-647
                 URL: https://issues.apache.org/jira/browse/TRAFODION-647
             Project: Apache Trafodion
          Issue Type: Bug
          Components: client-odbc-linux, client-odbc-windows, connectivity-dcs, connectivity-mxosrvr
            Reporter: Daniel Lu
            Assignee: Daniel Lu


Currently, driver compression is turned on by the DSN setting "Compression=?", but still, if the sending buffer size is too small, we do not compress it.  because in this case the time would be taken by compress+extract code, very possible longer than actually transmit time of the small buffer.  so we have a hard code threshold value for this in driver and server. but we know what is the best value for this depend on actual H/W and network delay.  so hard code is not a good option. we need to externalize it to outside user. for driver, we can put it in DSN setting, but for server side, a new property is required for DCS server, we need consider about it.



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