diff --git a/internal/core/src/common/Json.h b/internal/core/src/common/Json.h
index 992d45646b64f..6baddeaa849ad 100644
--- a/internal/core/src/common/Json.h
+++ b/internal/core/src/common/Json.h
@@ -191,7 +191,8 @@ class Json {
 
         // it's always safe to add the padding,
         // as we have allocated the memory with this padding
-        auto doc = parser.parse(data_.data() + offset, length);
+        auto doc = parser.parse(
+            data_.data() + offset, length, length + simdjson::SIMDJSON_PADDING);
         AssertInfo(doc.error() == simdjson::SUCCESS,
                    "failed to parse the json {}: {}",
                    std::string(data_.data() + offset, length),
diff --git a/internal/core/src/index/JsonKeyInvertedIndex.cpp b/internal/core/src/index/JsonKeyInvertedIndex.cpp
index 395753ae817d1..121be27a2c6a2 100644
--- a/internal/core/src/index/JsonKeyInvertedIndex.cpp
+++ b/internal/core/src/index/JsonKeyInvertedIndex.cpp
@@ -82,7 +82,7 @@ JsonKeyInvertedIndex::TravelJson(const char* json,
     } else if (current.type == JSMN_STRING) {
         Assert(current.size == 0);
         AddInvertedRecord(
-            path, offset, current.start, current.end - current.start);
+            path, offset, current.start - 1, current.end - current.start + 1);
         index++;
     }
 }
diff --git a/internal/indexnode/task_stats.go b/internal/indexnode/task_stats.go
index f153360dde62f..02e649994c44d 100644
--- a/internal/indexnode/task_stats.go
+++ b/internal/indexnode/task_stats.go
@@ -332,7 +332,8 @@ func (st *statsTask) Execute(ctx context.Context) error {
 			log.Ctx(ctx).Warn("stats wrong, failed to create text index", zap.Error(err))
 			return err
 		}
-	} else if st.req.GetSubJobType() == indexpb.StatsSubJob_JsonKeyIndexJob {
+	}
+	if st.req.GetSubJobType() == indexpb.StatsSubJob_Sort || st.req.GetSubJobType() == indexpb.StatsSubJob_JsonKeyIndexJob {
 		err = st.createJSONKeyIndex(ctx,
 			st.req.GetStorageConfig(),
 			st.req.GetCollectionID(),