enhance dataset err msg (#27363)

paddle/fluid/framework/data_feed.cc

@@ -527,6 +527,8 @@ bool MultiSlotDataFeed::CheckFile(const char* filename) {
         VLOG(0) << "error: the number of ids is a negative number: " << num;
         VLOG(0) << "please check line<" << instance_cout << "> in file<"
                 << filename << ">";
+        VLOG(0) << "Error occured when parsing " << i
+                << " th slot with total slots number: " << all_slots_.size();
         return false;
       } else if (num == 0) {
         VLOG(0)
@@ -536,42 +538,66 @@ bool MultiSlotDataFeed::CheckFile(const char* filename) {
                "characters.";
         VLOG(0) << "please check line<" << instance_cout << "> in file<"
                 << filename << ">";
+        VLOG(0) << "Error occured when parsing " << i
+                << " th slot with total slots number: " << all_slots_.size();
         return false;
       } else if (errno == ERANGE || num > INT_MAX) {
         VLOG(0) << "error: the number of ids greater than INT_MAX";
         VLOG(0) << "please check line<" << instance_cout << "> in file<"
                 << filename << ">";
+        VLOG(0) << "Error occured when parsing " << i
+                << " th slot with total slots number: " << all_slots_.size();
         return false;
       }
       if (all_slots_type_[i] == "float") {
-        for (int i = 0; i < num; ++i) {
+        for (int j = 0; j < num; ++j) {
           strtof(endptr, &endptr);
           if (errno == ERANGE) {
             VLOG(0) << "error: the value is out of the range of "
                        "representable values for float";
             VLOG(0) << "please check line<" << instance_cout << "> in file<"
                     << filename << ">";
+            VLOG(0) << "Error occured when parsing " << i
+                    << " th slot with total slots number: "
+                    << all_slots_.size();
+            VLOG(0) << "and in this slot: " << j
+                    << " th id with total id number: " << num;
             return false;
           }
-          if (i + 1 != num && endptr - str == len) {
+          if (j + 1 != num && endptr - str == len) {
             VLOG(0) << "error: there is a wrong with the number of ids.";
+            VLOG(0) << "Error occured when parsing " << i
+                    << " th slot with total slots number: "
+                    << all_slots_.size();
+            VLOG(0) << "and in this slot: " << j
+                    << " th id with total id number: " << num;
             VLOG(0) << "please check line<" << instance_cout << "> in file<"
                     << filename << ">";
             return false;
           }
         }
       } else if (all_slots_type_[i] == "uint64") {
-        for (int i = 0; i < num; ++i) {
+        for (int j = 0; j < num; ++j) {
           strtoull(endptr, &endptr, 10);
           if (errno == ERANGE) {
             VLOG(0) << "error: the value is out of the range of "
                        "representable values for uint64_t";
+            VLOG(0) << "Error occured when parsing " << i
+                    << " th slot with total slots number: "
+                    << all_slots_.size();
+            VLOG(0) << "and in this slot: " << j
+                    << " th id with total id number: " << num;
             VLOG(0) << "please check line<" << instance_cout << "> in file<"
                     << filename << ">";
             return false;
           }
-          if (i + 1 != num && endptr - str == len) {
+          if (j + 1 != num && endptr - str == len) {
             VLOG(0) << "error: there is a wrong with the number of ids.";
+            VLOG(0) << "Error occured when parsing " << i
+                    << " th slot with total slots number: "
+                    << all_slots_.size();
+            VLOG(0) << "and in this slot: " << j
+                    << " th id with total id number: " << num;
             VLOG(0) << "please check line<" << instance_cout << "> in file<"
                     << filename << ">";
             return false;
@@ -632,8 +658,13 @@ bool MultiSlotDataFeed::ParseOneInstanceFromPipe(
               "The number of ids can not be zero, you need padding "
               "it in data generator; or if there is something wrong with "
               "the data, please check if the data contains unresolvable "
-              "characters.\nplease check this error line: %s",
-              str));
+              "characters.\nplease check this error line: %s, \n Specifically, "
+              "something wrong happened(the length of this slot's feasign is 0)"
+              "when we parse the %d th slots."
+              "Maybe something wrong around this slot",
+              "\nWe detect the feasign number of this slot is %d, "
+              "which is illegal.",
+              str, i, num));
       if (idx != -1) {
         (*instance)[idx].Init(all_slots_type_[i]);
         if ((*instance)[idx].GetType()[0] == 'f') {  // float
@@ -683,8 +714,13 @@ bool MultiSlotDataFeed::ParseOneInstance(std::vector<MultiSlotType>* instance) {
               "The number of ids can not be zero, you need padding "
               "it in data generator; or if there is something wrong with "
               "the data, please check if the data contains unresolvable "
-              "characters.\nplease check this error line: %s.",
-              str));
+              "characters.\nplease check this error line: %s, \n Specifically, "
+              "something wrong happened(the length of this slot's feasign is 0)"
+              "when we parse the %d th slots."
+              "Maybe something wrong around this slot",
+              "\nWe detect the feasign number of this slot is %d, "
+              "which is illegal.",
+              str, i, num));
 
       if (idx != -1) {
         (*instance)[idx].Init(all_slots_type_[i]);
@@ -916,8 +952,13 @@ bool MultiSlotInMemoryDataFeed::ParseOneInstanceFromPipe(Record* instance) {
               "The number of ids can not be zero, you need padding "
               "it in data generator; or if there is something wrong with "
               "the data, please check if the data contains unresolvable "
-              "characters.\nplease check this error line: %s.",
-              str));
+              "characters.\nplease check this error line: %s, \n Specifically, "
+              "something wrong happened(the length of this slot's feasign is 0)"
+              "when we parse the %d th slots."
+              "Maybe something wrong around this slot",
+              "\nWe detect the feasign number of this slot is %d, "
+              "which is illegal.",
+              str, i, num));
       if (idx != -1) {
         if (all_slots_type_[i][0] == 'f') {  // float
           for (int j = 0; j < num; ++j) {
@@ -982,8 +1023,13 @@ bool MultiSlotInMemoryDataFeed::ParseOneInstance(Record* instance) {
               "The number of ids can not be zero, you need padding "
               "it in data generator; or if there is something wrong with "
               "the data, please check if the data contains unresolvable "
-              "characters.\nplease check this error line: %s.",
-              str));
+              "characters.\nplease check this error line: %s, \n Specifically, "
+              "something wrong happened(the length of this slot's feasign is 0)"
+              "when we parse the %d th slots."
+              "Maybe something wrong around this slot",
+              "\nWe detect the feasign number of this slot is %d, "
+              "which is illegal.",
+              str, i, num));
 
       if (idx != -1) {
         if (all_slots_type_[i][0] == 'f') {  // float