Bug IndexError

[KAINeDEZZ]

class AsynchContexManager:
    def __init__(self, url: str):
        self.url = url
        self.connection = None

    async def __aenter__(self) -> asynch.connection.Connection:
        self.connection = await asynch.connect(self.url)
        return self.connection

    async def __aexit__(self, exc_type, exc_val, exc_tb):
        await self.connection.close()


def clickhouse_cursor(func: Callable[Concatenate[asynch.connection.Connection, P], T]) -> Callable[P, T]:
    url = f"{clickhouse.get_connection_url()}?os_thread_priority=19&max_threads=4"

    @functools.wraps(func)
    @backoff.on_exception(backoff.constant, (ClickHouseException, DatabaseError), max_tries=3, interval=90)
    async def wrapper(*args: P.args, **kwargs: P.kwargs) -> T:
        async with AsynchContexManager(url) as connection:
            async with connection.cursor(cursor=cursors.DictCursor) as cursor:
                return await func(*args, **kwargs, cursor=cursor)

    return wrapper

class Puller:
    @clickhouse_cursor
    @backoff.on_exception(backoff.constant, IndexError, interval=10)
    async def pull(self, cursor: asynch.cursors.Cursor) -> DataFrame:
        await cursor.execute(f"""                                                                                                 # <- Index error
            select * 
            from {self.table_name}
            limit {self.limit}
            offset {self.pointer}
        """)

File "/opt/project/jobs/sync_attribution/utils/puller.py", line 94, in pull
  await cursor.execute(f"""
File "/usr/local/lib/python3.10/site-packages/asynch/cursors.py", line 64, in execute
  response = await execute(query, args=args, with_column_types=True, **execute_kwargs)
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 623, in execute
  async with ExecuteContext(self, query, settings):
File "/usr/local/lib/python3.10/site-packages/asynch/proto/context.py", line 56, in __aexit__
  raise exc_val
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 639, in execute
  rv = await self.process_ordinary_query(
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 768, in process_ordinary_query
  return await self.receive_result(with_column_types=with_column_types, columnar=columnar)
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 487, in receive_result
  return await result.get_result()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/result.py", line 56, in get_result
  async for packet in self.packet_generator:
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 465, in packet_generator
  packet = await self.receive_packet()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 391, in receive_packet
  packet = await self._receive_packet()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 425, in _receive_packet
  packet.block = await self.receive_data()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/connection.py", line 328, in receive_data
  return await (self.block_reader_raw if raw else self.block_reader).read()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/streams/block.py", line 82, in read
  column = await read_column(
File "/usr/local/lib/python3.10/site-packages/asynch/proto/columns/__init__.py", line 155, in read_column
  return await column.read_data(
File "/usr/local/lib/python3.10/site-packages/asynch/proto/columns/base.py", line 112, in read_data
  return await self._read_data(n_items, nulls_map=nulls_map)
File "/usr/local/lib/python3.10/site-packages/asynch/proto/columns/base.py", line 115, in _read_data
  items = await self.read_items(
File "/usr/local/lib/python3.10/site-packages/asynch/proto/columns/stringcolumn.py", line 18, in read_items
  ret.append(await self.reader.read_str(as_bytes=self.read_as_bytes))
File "/usr/local/lib/python3.10/site-packages/asynch/proto/streams/buffered.py", line 141, in read_str
  length = await self.read_varint()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/streams/buffered.py", line 130, in read_varint
  packet = self._read_one()
File "/usr/local/lib/python3.10/site-packages/asynch/proto/streams/buffered.py", line 120, in _read_one
  packet = self.buffer[self.position]
dexError: bytearray index out of range

clickhouse: 23.3.1.2823
python: 3.10
asynch: 0.2.2

[draincoder]

Hi, how do you handle this error? It looks like there is still no fix.

[mikoda1995]

got the same error. Python 3.11, Clickhouse 23.10.2.13. asynch upstream

[lainiwa]

Getting the same exception. Seems to be a lasting issue: #10, #20, #25.

[dtatarkin]

Got the same error:
clickhouse: 23.8.3.48
python: 3.11.4
asynch: 0.2.2

[stankudrow]

@KAINeDEZZ , can this issue be closed?