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Diffstat (limited to 'src/third_party/wiredtiger/test/suite/test_nsnap03.py')
-rw-r--r-- | src/third_party/wiredtiger/test/suite/test_nsnap03.py | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/test/suite/test_nsnap03.py b/src/third_party/wiredtiger/test/suite/test_nsnap03.py new file mode 100644 index 00000000000..0e853522940 --- /dev/null +++ b/src/third_party/wiredtiger/test/suite/test_nsnap03.py @@ -0,0 +1,96 @@ +#!/usr/bin/env python +# +# Public Domain 2014-2016 MongoDB, Inc. +# Public Domain 2008-2014 WiredTiger, Inc. +# +# This is free and unencumbered software released into the public domain. +# +# Anyone is free to copy, modify, publish, use, compile, sell, or +# distribute this software, either in source code form or as a compiled +# binary, for any purpose, commercial or non-commercial, and by any +# means. +# +# In jurisdictions that recognize copyright laws, the author or authors +# of this software dedicate any and all copyright interest in the +# software to the public domain. We make this dedication for the benefit +# of the public at large and to the detriment of our heirs and +# successors. We intend this dedication to be an overt act of +# relinquishment in perpetuity of all present and future rights to this +# software under copyright law. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +# OTHER DEALINGS IN THE SOFTWARE. +# +# test_nsnap03.py +# Named snapshots: Access and create from multiple sessions + +from suite_subprocess import suite_subprocess +from wtscenario import multiply_scenarios, number_scenarios +from helper import simple_populate +import wiredtiger, wttest + +class test_nsnap03(wttest.WiredTigerTestCase, suite_subprocess): + tablename = 'test_nsnap03' + uri = 'table:' + tablename + nrows = 300 + nrows_per_snap = 10 + nsnapshots = 10 + + def check_named_snapshot(self, snapshot, expected): + new_session = self.conn.open_session() + new_session.begin_transaction("snapshot=" + str(snapshot)) + c = new_session.open_cursor(self.uri) + count = 0 + for row in c: + count += 1 + new_session.commit_transaction() + # print "Checking snapshot %d, expect %d, found %d" % (snapshot, expected, count) + self.assertEqual(count, expected) + new_session.close() + + def test_named_snapshots(self): + # Populate a table + end = start = 0 + simple_populate(self, self.uri, 'key_format=i', 0) + + # Now run a workload: + # every iteration: + # create a new named snapshot, N + # append 20 rows and delete the first 10 + # verify that every snapshot N contains the expected number of rows + # if there are more than 10 snapshots active, drop the first half + snapshots = [] + c = self.session.open_cursor(self.uri) + for n in xrange(self.nrows / self.nrows_per_snap): + if len(snapshots) > self.nsnapshots: + middle = len(snapshots) / 2 + dropcfg = ",drop=(to=%d)" % snapshots[middle][0] + snapshots = snapshots[middle + 1:] + else: + dropcfg = "" + + # Close and start a new session every three snapshots + if n % 3 == 0: + self.session.close() + self.session = self.conn.open_session() + c = self.session.open_cursor(self.uri) + + self.session.snapshot("name=%d%s" % (n, dropcfg)) + snapshots.append((n, end - start)) + for i in xrange(2 * self.nrows_per_snap): + c[end + i] = "some value" + end += 2 * self.nrows_per_snap + for i in xrange(self.nrows_per_snap): + del c[start + i] + start += self.nrows_per_snap + + for snapshot, expected in snapshots: + self.check_named_snapshot(snapshot, expected) + +if __name__ == '__main__': + wttest.run() |