Index out of range in BitGet

[k-krst]

Hallo.
I need help.

I use pg-chameleon 2.0.16. Init process is normal.
After command start_replica process crash and there is the follow text in log file:

2020-11-17 16:51:51 MainProcess DEBUG: Changing the autocommit flag to True
2020-11-17 16:51:51 MainProcess DEBUG: Changing the autocommit flag to True
2020-11-17 16:51:51 MainProcess DEBUG: Changing the autocommit flag to True
2020-11-17 16:51:51 MainProcess INFO: Checking if the replica for source mysql3 is stopped
2020-11-17 16:51:51 MainProcess INFO: Cleaning not processed batches for source mysql3
2020-11-17 16:51:51 MainProcess DEBUG: Cleaning table t_log_replica_mysql3_2
2020-11-17 16:51:51 MainProcess DEBUG: Cleaning table t_log_replica_mysql3_1
2020-11-17 16:51:51 MainProcess INFO: Starting the replica daemons for source mysql3
2020-11-17 16:51:51 MainProcess DEBUG: Replica process for source mysql3 is running
2020-11-17 16:51:51 MainProcess DEBUG: Changing the autocommit flag to True
2020-11-17 16:51:51 MainProcess DEBUG: Cleaning replayed batches for source mysql3 older than 1 day
2020-11-17 16:52:01 MainProcess ERROR: Read process alive: False - Replay process alive: True
2020-11-17 16:52:01 MainProcess ERROR: Stack trace: Traceback (most recent call last):
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pg_chameleon/lib/global_lib.py", line 496, in read_replica
self.mysql_source.read_replica()
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pg_chameleon/lib/mysql_lib.py", line 1453, in read_replica
replica_data=self.__read_replica_stream(batch_data)
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pg_chameleon/lib/mysql_lib.py", line 1311, in __read_replica_stream
for row in binlogevent.rows:
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pymysqlreplication/row_event.py", line 433, in rows
self._fetch_rows()
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pymysqlreplication/row_event.py", line 428, in _fetch_rows
self.__rows.append(self._fetch_one_row())
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pymysqlreplication/row_event.py", line 481, in _fetch_one_row
row["values"] = self._read_column_data(self.columns_present_bitmap)
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pymysqlreplication/row_event.py", line 97, in _read_column_data
if BitGet(cols_bitmap, i) == 0:
File "/home/user/chameleon2/env/lib/python3.7/site-packages/pymysqlreplication/bitmap.py", line 34, in BitGet
bit = bitmap[int(position / 8)]
IndexError: index out of range

2020-11-17 16:52:01 MainProcess ERROR: Read daemon crashed. Terminating the replay daemon.
2020-11-17 16:52:01 MainProcess DEBUG: Changing the autocommit flag to True
2020-11-17 16:52:01 MainProcess INFO: Replica process for source mysql3 ended

My databases are:
MySQL 8.0.20-11
PostgreSQL 12.4 (Debian 12.4-1.pgdg90+1)

[the4thdoctor]

Hi, this seems to be an issue with the replication library.
There is already an open ticket for the problem here.
julien-duponchelle/python-mysql-replication#330

[k-krst]

Thanks a lot. I think so.