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test(tsdb): break up repeated test to avoid timeout (#10671)

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On macOS, the TestTombstoneCleanRetentionLimitsRace performs very
poorly. It takes more than a second to write out one block, and as it
writes 400 of them, we run into the 10-minute test timeout frequently.

While this doesn't fix the actual performance issue, breaking each
iteration into a subtest makes the test pass reliably (because each
iteration comfortably finishes in under a minute).

Related report: https://groups.google.com/g/prometheus-developers/c/jxQ6Ayg6VJ4/m/03H_DS9PDAAJ

Signed-off-by: Matthias Rampke <matthias@prometheus.io>
This commit is contained in:
Matthias Rampke 2022-05-08 22:39:26 +00:00 committed by GitHub
parent eb1617ebd5
commit 78f2645787
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1 changed files with 30 additions and 28 deletions
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58
tsdb/db_test.go
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@ -1281,38 +1281,40 @@ func TestTombstoneCleanRetentionLimitsRace(t *testing.T) {
//
// That is something tricky to trigger, so let's try several times just to make sure.
for i := 0; i < 20; i++ {
db := openTestDB(t, opts, nil)
totalBlocks := 20
dbDir := db.Dir()
// Generate some blocks with old mint (near epoch).
for j := 0; j < totalBlocks; j++ {
blockDir := createBlock(t, dbDir, genSeries(10, 1, int64(j), int64(j)+1))
block, err := OpenBlock(nil, blockDir, nil)
require.NoError(t, err)
// Cover block with tombstones so it can be deleted with CleanTombstones() as well.
tomb := tombstones.NewMemTombstones()
tomb.AddInterval(0, tombstones.Interval{Mint: int64(j), Maxt: int64(j) + 1})
block.tombstones = tomb
t.Run(fmt.Sprintf("iteration%d", i), func(t *testing.T) {
db := openTestDB(t, opts, nil)
totalBlocks := 20
dbDir := db.Dir()
// Generate some blocks with old mint (near epoch).
for j := 0; j < totalBlocks; j++ {
blockDir := createBlock(t, dbDir, genSeries(10, 1, int64(j), int64(j)+1))
block, err := OpenBlock(nil, blockDir, nil)
require.NoError(t, err)
// Cover block with tombstones so it can be deleted with CleanTombstones() as well.
tomb := tombstones.NewMemTombstones()
tomb.AddInterval(0, tombstones.Interval{Mint: int64(j), Maxt: int64(j) + 1})
block.tombstones = tomb
db.blocks = append(db.blocks, block)
}
db.blocks = append(db.blocks, block)
}
wg.Add(2)
// Run reload and CleanTombstones together, with a small time window randomization
go func() {
defer wg.Done()
time.Sleep(time.Duration(rand.Float64() * 100 * float64(time.Millisecond)))
require.NoError(t, db.reloadBlocks())
}()
go func() {
defer wg.Done()
time.Sleep(time.Duration(rand.Float64() * 100 * float64(time.Millisecond)))
require.NoError(t, db.CleanTombstones())
}()
wg.Add(2)
// Run reload and CleanTombstones together, with a small time window randomization
go func() {
defer wg.Done()
time.Sleep(time.Duration(rand.Float64() * 100 * float64(time.Millisecond)))
require.NoError(t, db.reloadBlocks())
}()
go func() {
defer wg.Done()
time.Sleep(time.Duration(rand.Float64() * 100 * float64(time.Millisecond)))
require.NoError(t, db.CleanTombstones())
}()
wg.Wait()
wg.Wait()
require.NoError(t, db.Close())
require.NoError(t, db.Close())
})
}
}