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tests: test corner case for summary creation

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We have recently had a bug where we were messing up with the summary generation
in certain corner cases. In particular, when the number of keys was an exact multiple
of the sampling rate.

Add a test case to make sure we never regress on this.

Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
This commit is contained in:
Glauber Costa
2015-06-17 07:26:47 -04:00
parent fbeba60f27
commit 95c8da8276
1 changed files with 26 additions and 0 deletions
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26
tests/urchin/sstable_datafile_test.cc
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@@ -923,3 +923,29 @@ SEASTAR_TEST_CASE(datafile_generation_13) {
}).then([sst, mtp] {});
});
}
SEASTAR_TEST_CASE(datafile_generation_14) {
return test_setup::do_with_test_directory([] {
auto s = uncompressed_schema();
auto mtp = make_shared<memtable>(s);
// Create a number of keys that is a multiple of the sampling level
for (int i = 0; i < 0x80; ++i) {
sstring k = "key" + to_sstring(i);
auto key = partition_key::from_exploded(*s, {to_bytes(k)});
mutation m(key, s);
auto c_key = clustering_key::make_empty(*s);
m.set_clustered_cell(c_key, to_bytes("col2"), boost::any(i), api::max_timestamp);
mtp->apply(std::move(m));
}
auto sst = make_lw_shared<sstable>("tests/urchin/sstables/tests-temporary", 14, la, big);
return sst->write_components(*mtp).then([s] {
return reusable_sst("tests/urchin/sstables/tests-temporary", 14).then([] (auto s) {
// Not crashing is enough
return make_ready_future<>();
});
}).then([sst, mtp] {});
});
}