presto-hive/src/main/java/io/prestosql/plugin/hive/HiveMetadata.java/HiveMetadata/setTableComment
class HiveMetadata:    @Override
    public void setTableComment(ConnectorSession session, ConnectorTableHandle tableHandle, Optional<String> comment)
    {
        HiveTableHandle handle = (HiveTableHandle) tableHandle;
        metastore.commentTable(new HiveIdentity(session), handle.getSchemaName(), handle.getTableName(), comment);
    }