Maximum Packet Length Exceeded (Roxie)

The following error occurs when there is very sparse input into the external linking logic:

[1446: Maximum packet length 65535 exceeded sending packet activityId=3958 uid=0x00580a36 pri=LOW queryHash=a23e85d2300955cd ch=8 seq=0 cont=1 server=10.173.111.97 (in Index Read 3958)]

The above error points to the below code as the point of failure:

EXPORT RawFetch_server(TYPEOF(h.company_name_prefix) param_company_name_prefix = (TYPEOF(h.company_name_prefix))'',TYPEOF(h.cnp_name) param_cnp_name = (TYPEOF(h.cnp_name))'',TYPEOF(h.st) param_st = (TYPEOF(h.st))'',DATASET(Process_Biz_Layouts.layout_zip_cases) param_zip,TYPEOF(h.fallback_value) param_fallback_value = (TYPEOF(h.fallback_value))'',UNSIGNED4 param_efr_bitmap = 0) :=

    STEPPED( LIMIT( Key(

          KEYED((company_name_prefix = param_company_name_prefix))

      AND KEYED(fallback_value >= param_fallback_value) /HACK26d/

      AND KEYED((param_st = (TYPEOF(st))'' OR st = (TYPEOF(st))'') OR (st = param_st))

      AND KEYED((~EXISTS(param_zip) OR zip = (TYPEOF(zip))'') OR (zip IN SET(param_zip,zip)))

      AND ((param_cnp_name = (TYPEOF(cnp_name))'' OR cnp_name = (TYPEOF(cnp_name))'') OR (SALT44.MatchBagOfWords(cnp_name,param_cnp_name,3177747,1) > Config_BIP.cnp_name_Force * 100))

      AND ( param_efr_bitmap=0 OR (EFR_BMap & param_efr_bitmap)>0 )),Config_BIP.L_CNPNAME_FUZZY_MAXBLOCKLIMIT,ONFAIL(TRANSFORM(KeyRec,SELF := ROW([],KeyRec))),KEYED),ultid,orgid,seleid,proxid);

As per Gavin, should at least update the error message to give more details about the error.