Merge pull request #15996 from taosdata/fix/TD-18329

fix(driver): get raw block length

source/client/src/TMQConnector.c

@@ -322,7 +322,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_tmq_TMQConnector_fetchRawBlockImp(
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetNumOfRowsFp, (jint)numOfRows);
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetNumOfColsFp, (jint)numOfFields);
 
-  int32_t len = *(int32_t *)data;
+  int32_t len = *(int32_t *)(((char *)data) + 4);
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetByteArrayFp, jniFromNCharToByteArray(env, (char *)data, len));
   return JNI_SUCCESS;
 }

source/client/src/TSDBJNIConnector.c

@@ -592,7 +592,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_fetchBlockImp(JNI
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetNumOfRowsFp, (jint)numOfRows);
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetNumOfColsFp, (jint)numOfFields);
 
-  int32_t len = *(int32_t *)data;
+  int32_t len = *(int32_t *)(((char *)data) + 4);
   (*env)->CallVoidMethod(env, rowobj, g_blockdataSetByteArrayFp, jniFromNCharToByteArray(env, (char *)data, len));
 
   return JNI_SUCCESS;