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https://issues.apache.org/jira/browse/CASSANDRA-17397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brad Schoening updated CASSANDRA-17397:
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Summary: cleanup cqlshlib unit test failures and warnings (was: cqlshlib
unit test test_copyutil.py can fail due to too many open files)
> cleanup cqlshlib unit test failures and warnings
> ------------------------------------------------
>
> Key: CASSANDRA-17397
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17397
> Project: Cassandra
> Issue Type: Bug
> Reporter: Brad Schoening
> Priority: Normal
>
> The cqlshlib test test_copyutil.py fails on MacOS with
> *E OSError: [Errno 24] Too many open files*
> This happens because the test does not close the file descriptors after use.
> The default ulimit on MacOS is small, 256:
> % ulimit -n
> 256
> The simple fix is to close the pipe after use. Increasing ulimit nofiles
> works also, but shouldn't be necessary.
>
>
> *test/test_copyutil.py*:80: in _test_get_ranges_murmur3_base
> export_task = ExportTask(shell, self.ks, self.table, self.columns,
> self.fname, overridden_opts, self.protocol_version, self.config_file)
> *copyutil.py*:638: in __init__
> CopyTask.__init__(self, shell, ks, table, columns, fname, opts,
> protocol_version, config_file, 'to')
> *copyutil.py*:275: in __init__
> self.inmsg = ReceivingChannels(self.num_processes)
> *copyutil.py*:186: in __init__
> self.pipes = [OneWayPipe() for _ in range(num_channels)]
> *copyutil.py*:186: in <listcomp>
> self.pipes = [OneWayPipe() for _ in range(num_channels)]
> *copyutil.py*:103: in __init__
> self.reader, self.writer = mp.Pipe(duplex=False)
> */usr/local/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py*:63:
> in Pipe
> return Pipe(duplex)
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>
> duplex = False
>
> def Pipe(duplex=True):
> '''
> Returns pair of connection objects at either end of a pipe
> '''
> if duplex:
> s1, s2 = socket.socketpair()
> s1.setblocking(True)
> s2.setblocking(True)
> c1 = Connection(s1.detach())
> c2 = Connection(s2.detach())
> else:
> > fd1, fd2 = os.pipe()
> *E OSError: [Errno 24] Too many open files*
>
> */usr/local/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/connection.py*:532:
> OSError
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