ea81053275
Switch from making eviction impossible to merely unlikely. This allows metadata pages to split and for eviction to discard deleted data. Without this change, the trivial test added in test_schema07.py hangs because the metadata fills the cache.
55 lines
2.1 KiB
Python
55 lines
2.1 KiB
Python
#!/usr/bin/env python
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#
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# Public Domain 2014-2016 MongoDB, Inc.
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# Public Domain 2008-2014 WiredTiger, Inc.
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#
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# This is free and unencumbered software released into the public domain.
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#
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# Anyone is free to copy, modify, publish, use, compile, sell, or
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# distribute this software, either in source code form or as a compiled
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# binary, for any purpose, commercial or non-commercial, and by any
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# means.
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#
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# In jurisdictions that recognize copyright laws, the author or authors
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# of this software dedicate any and all copyright interest in the
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# software to the public domain. We make this dedication for the benefit
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# of the public at large and to the detriment of our heirs and
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# successors. We intend this dedication to be an overt act of
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# relinquishment in perpetuity of all present and future rights to this
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# software under copyright law.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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import wiredtiger, wttest
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# test_schema07.py
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# Test that long-running tests don't fill the cache with metadata
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class test_schema07(wttest.WiredTigerTestCase):
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tablename = 'table:test_schema07'
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def conn_config(self, dir):
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return 'cache_size=10MB'
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@wttest.longtest("Creating many tables shouldn't fill the cache")
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def test_many_tables(self):
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s = self.session
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# We have a 10MB cache, metadata is (well) over 512B per table,
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# if we can create 20K tables, something must be cleaning up.
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for i in xrange(20000):
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uri = '%s-%06d' % (self.tablename, i)
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s.create(uri)
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c = s.open_cursor(uri)
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# This will block if the metadata fills the cache
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c["key"] = "value"
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c.close()
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self.session.drop(uri)
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if __name__ == '__main__':
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wttest.run()
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