[ https://issues.apache.org/jira/browse/CASSANDRA-16053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams updated CASSANDRA-16053: ----------------------------------------- Reviewers: Brandon Williams, Ekaterina Dimitrova (was: Ekaterina Dimitrova) > cqlsh COPY functions broken in Python 3.8 on Mac > ------------------------------------------------ > > Key: CASSANDRA-16053 > URL: https://issues.apache.org/jira/browse/CASSANDRA-16053 > Project: Cassandra > Issue Type: Bug > Components: Tool/cqlsh > Reporter: Adam Holmberg > Assignee: Adam Holmberg > Priority: Normal > Fix For: 4.0-beta2 > > > {noformat} > aholmberg-rmbp16:cassandra adamholmberg$ pyenv shell > 3.8.2 > aholmberg-rmbp16:cassandra adamholmberg$ bin/cqlsh --debug > Using CQL driver: <module 'cassandra' from > '/Users/adamholmberg/code/cassandra/bin/../lib/cassandra-driver-internal-only-3.23.0.post0-1a184b99.zip/cassandra-driver-3.23.0.post0-1a184b99/cassandra/__init__.py'> > Using connect timeout: 5 seconds > Using 'utf-8' encoding > Using ssl: False > Connected to Test Cluster at 127.0.0.1:9042. > [cqlsh 5.0.1 | Cassandra 4.0-beta2-SNAPSHOT | CQL spec 3.4.5 | Native > protocol v4] > Use HELP for help. > cqlsh> copy test.testcopyto to 'asdf'; > Detected 12 core(s) > Using 11 child processes > Starting copy of test.testcopyto with columns [a, b, c, d]. > Traceback (most recent call last): > File "/Users/adamholmberg/code/cassandra/bin/cqlsh.py", line 937, in onecmd > self.handle_statement(st, statementtext) > File "/Users/adamholmberg/code/cassandra/bin/cqlsh.py", line 974, in > handle_statement > return custom_handler(parsed) > File "/Users/adamholmberg/code/cassandra/bin/cqlsh.py", line 1563, in > do_copy > task.run() > File > "/Users/adamholmberg/code/cassandra/bin/../pylib/cqlshlib/copyutil.py", line > 669, in run > self.start_processes() > File > "/Users/adamholmberg/code/cassandra/bin/../pylib/cqlshlib/copyutil.py", line > 471, in start_processes > process.start() > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/process.py", > line 121, in start > self._popen = self._Popen(self) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/context.py", > line 224, in _Popen > return _default_context.get_context().Process._Popen(process_obj) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/context.py", > line 283, in _Popen > return Popen(process_obj) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/popen_spawn_posix.py", > line 32, in __init__ > super().__init__(process_obj) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/popen_fork.py", > line 19, in __init__ > self._launch(process_obj) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/popen_spawn_posix.py", > line 47, in _launch > reduction.dump(process_obj, fp) > File > "/Users/adamholmberg/.pyenv/versions/3.8.2/lib/python3.8/multiprocessing/reduction.py", > line 60, in dump > ForkingPickler(file, protocol).dump(obj) > TypeError: cannot pickle '_thread.lock' object > cqlsh> > {noformat} > multiprocessing uses a different default start method on Mac, and pickling > fails trying to serialize the Cluster object. > https://github.com/python/cpython/blob/db098bc1f05bd0773943e59f83489f05f28dedf8/Lib/multiprocessing/context.py#L313-L318 > https://bugs.python.org/issue33725 -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org