presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduMetadata.java/KuduMetadata/dropColumn
class KuduMetadata:    @Override
    public void dropColumn(ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle column)
    {
        KuduTableHandle kuduTableHandle = (KuduTableHandle) tableHandle;
        KuduColumnHandle kuduColumnHandle = (KuduColumnHandle) column;
        clientSession.dropColumn(kuduTableHandle.getSchemaTableName(), kuduColumnHandle.getName());
    }