public void release() throws IOException {
    activeQueriesCount.decrementAndGet();
    closeIfPossible();
  }
If this classloader is marked as deprecated, then this classloader can be closed after all
queries that use this classloader are completed.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/udf/service/UDFClassLoader.java