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planner: fix the unstable test TestAnalyzeGlobalStatsWithOpts (#27734)

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This commit is contained in:
Yuanjia Zhang
2021-09-06 18:58:58 +08:00
committed by GitHub
parent 68e32bb44e
commit 36a191bc16
1 changed files with 3 additions and 3 deletions
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6
statistics/handle/handle_test.go
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@ -903,14 +903,14 @@ func (s *testSerialStatsSuite) prepareForGlobalStatsWithOpts(c *C, tk *testkit.T
// nolint:unused
func (s *testSerialStatsSuite) checkForGlobalStatsWithOpts(c *C, tk *testkit.TestKit, t string, p string, topn, buckets int) {
delta := buckets/2 + 1
delta := buckets/2 + 10
for _, isIdx := range []int{0, 1} {
c.Assert(len(tk.MustQuery(fmt.Sprintf("show stats_topn where table_name='%v' and partition_name='%v' and is_index=%v", t, p, isIdx)).Rows()), Equals, topn)
numBuckets := len(tk.MustQuery(fmt.Sprintf("show stats_buckets where table_name='%v' and partition_name='%v' and is_index=%v", t, p, isIdx)).Rows())
// since the hist-building algorithm doesn't stipulate the final bucket number to be equal to the expected number exactly,
// we have to check the results by a range here.
c.Assert(numBuckets >= buckets-delta, IsTrue)
c.Assert(numBuckets <= buckets+delta, IsTrue)
c.Assert(numBuckets, GreaterEqual, buckets-delta)
c.Assert(numBuckets, LessEqual, buckets+delta)
}
}