Add a judgment in order to avoid occur NPE when one value of measurementSchemas is null (apache#15574)

Author: zerolbsony

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/memory/InsertNodeMemoryEstimator.java

@@ -669,6 +669,10 @@ public static long sizeOfValues(
         RamUsageEstimator.alignObjectSize(
             NUM_BYTES_ARRAY_HEADER + NUM_BYTES_OBJECT_REF * values.length);
     for (int i = 0; i < values.length; i++) {
+      if (measurementSchemas[i] == null || measurementSchemas[i].getType() == null) {
+        size += NUM_BYTES_OBJECT_HEADER;
+        continue;
+      }
       switch (measurementSchemas[i].getType()) {
         case INT64:
         case TIMESTAMP:

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/metadata/fetcher/cache/TreeDeviceNormalSchema.java

@@ -63,7 +63,7 @@ public int update(final String[] measurements, final IMeasurementSchema[] schema
 
     for (int i = 0; i < length; ++i) {
       // Skip this to avoid instance creation/gc for writing performance
-      if (measurementMap.containsKey(measurements[i])) {
+      if (measurements[i] == null || measurementMap.containsKey(measurements[i])) {
         continue;
       }
       diff += putEntry(measurements[i], schemas[i], null);