presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduUpdatablePageSource.java/KuduUpdatablePageSource/deleteRows
class KuduUpdatablePageSource:    @Override
    public void deleteRows(Block rowIds)
    {
        Schema schema = table.getSchema();
        KuduSession session = clientSession.newSession();
        session.setFlushMode(FlushMode.AUTO_FLUSH_BACKGROUND);
        try {
            try {
                for (int i = 0; i < rowIds.getPositionCount(); i++) {
                    int len = rowIds.getSliceLength(i);
                    Slice slice = rowIds.getSlice(i, 0, len);
                    PartialRow row = KeyEncoderAccessor.decodePrimaryKey(schema, slice.getBytes());
                    Delete delete = table.newDelete();
                    RowHelper.copyPrimaryKey(schema, row, delete.getRow());
                    session.apply(delete);
                }
            }
            finally {
                session.close();
            }
        }
        catch (KuduException e) {
            throw new RuntimeException(e);
        }
    }