private void saveJarFile(String jarName, ByteBuffer byteBuffer) throws IOException {
    if (byteBuffer != null) {
      TriggerExecutableManager.getInstance().saveToInstallDir(byteBuffer, jarName);
    }
  }
check whether local jar is correct according to md5.

@throws TriggerManagementException if failed to compute md5 of the jar file.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/trigger/service/TriggerManagementService.java