java - VerticaCopyStream is very slow -


i use vertica flex table load json vertica without defining tables, , got problems loading time.

i connect vertica jdbc drive , use code..

string copyquery = "copy schema.tablename stdin parser fjsonparser()"; verticacopystream vstream = new verticacopystream((verticaconnection)conn, copyquery); inputstream input; vstream.start(); for(jsonnode json : jsonlist){      input = new bytearrayinputstream(json.tostring().getbytes());      vstream.addstream(input);      input.close(); } vstream.execute(); vstream.finish();

the command "vstream.execute()" takes 12 seconds 5000 jsons when use copy command file runs less second.

your problem not verticacopystream , problem regard different parsers used , need compare apple apple , json parser should more slower simple csv parser .


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