insufficient data in buffer

• asyncpg version: 0.29.0
• PostgreSQL version: 15.6
• Python version: 3.11.4
• Platform: debian
• Do you use pgbouncer?: no
• Did you install asyncpg with pip?: yes
• Can the issue be reproduced under both asyncio and
  uvloop?: not sure

AssertionError: insufficient data in buffer: requested 8 remaining 4
  File "sqlalchemy/ext/asyncio/engine.py", line 659, in execute
    result = await greenlet_spawn(
  File "sqlalchemy/util/_concurrency_py3k.py", line 200, in greenlet_spawn
    result = context.throw(*sys.exc_info())
  File "sqlalchemy/engine/base.py", line 1416, in execute
    return meth(
  File "sqlalchemy/sql/elements.py", line 517, in _execute_on_connection
    return connection._execute_clauseelement(
  File "sqlalchemy/engine/base.py", line 1639, in _execute_clauseelement
    ret = self._execute_context(
  File "sqlalchemy/engine/base.py", line 1848, in _execute_context
    return self._exec_single_context(
  File "sqlalchemy/engine/base.py", line 1988, in _exec_single_context
    self._handle_dbapi_exception(
  File "sqlalchemy/engine/base.py", line 2347, in _handle_dbapi_exception
    raise exc_info[1].with_traceback(exc_info[2])
  File "sqlalchemy/engine/base.py", line 1969, in _exec_single_context
    self.dialect.do_execute(
  File "sqlalchemy/engine/default.py", line 922, in do_execute
    cursor.execute(statement, parameters)
  File "sqlalchemy/dialects/postgresql/asyncpg.py", line 580, in execute
    self._adapt_connection.await_(
  File "sqlalchemy/util/_concurrency_py3k.py", line 130, in await_only
    return current.driver.switch(awaitable)  # type: ignore[no-any-return]
  File "sqlalchemy/util/_concurrency_py3k.py", line 195, in greenlet_spawn
    value = await result
  File "sqlalchemy/dialects/postgresql/asyncpg.py", line 558, in _prepare_and_execute
    self._handle_exception(error)
  File "sqlalchemy/dialects/postgresql/asyncpg.py", line 509, in _handle_exception
    self._adapt_connection._handle_exception(error)
  File "sqlalchemy/dialects/postgresql/asyncpg.py", line 799, in _handle_exception
    raise error
  File "sqlalchemy/dialects/postgresql/asyncpg.py", line 546, in _prepare_and_execute
    self._rows = await prepared_stmt.fetch(*parameters)
  File "asyncpg/prepared_stmt.py", line 176, in fetch
    data = await self.__bind_execute(args, 0, timeout)
  File "asyncpg/prepared_stmt.py", line 241, in __bind_execute
    data, status, _ = await self.__do_execute(
  File "asyncpg/prepared_stmt.py", line 230, in __do_execute
    return await executor(protocol)
  File "asyncpg/protocol/protocol.pyx", line 207, in bind_execute
  File "asyncpg/protocol/coreproto.pyx", line 70, in asyncpg.protocol.protocol.CoreProtocol._read_server_messages
  File "asyncpg/protocol/coreproto.pyx", line 225, in asyncpg.protocol.protocol.CoreProtocol._process__bind_execute
  File "asyncpg/protocol/coreproto.pyx", line 518, in asyncpg.protocol.protocol.CoreProtocol._parse_data_msgs
  File "asyncpg/protocol/protocol.pyx", line 839, in asyncpg.protocol.protocol.BaseProtocol._decode_row
  File "asyncpg/protocol/prepared_stmt.pyx", line 328, in asyncpg.protocol.protocol.PreparedStatementState._decode_row
  File "asyncpg/protocol/codecs/base.pyx", line 330, in asyncpg.protocol.protocol.Codec.decode
  File "asyncpg/protocol/codecs/base.pyx", line 230, in asyncpg.protocol.protocol.Codec.decode_scalar
  File "asyncpg/pgproto/./codecs/float.pyx", line 33, in asyncpg.pgproto.pgproto.float8_decode
  File "asyncpg/pgproto/./frb.pxd", line 27, in asyncpg.pgproto.pgproto.frb_read
  File "asyncpg/pgproto/./frb.pyx", line 10, in asyncpg.pgproto.pgproto.frb_check

is it a network issue or somewhere I need to look into?

Comienza con las entradas del traceback en asyncpg/protocol/coreproto.pyx, asyncpg/protocol/codecs/float.pyx y asyncpg/protocol/frb.pyx; después, revisa la ruta de ejecución asíncrona de SQLAlchemy que se muestra. Reproduce el fallo con las versiones indicadas de Python, PostgreSQL y asyncpg y determina si se puede aislar el búfer truncado. Se considerará terminado cuando haya una causa confirmada y una prueba de regresión o una reproducción claramente documentada.