Unverified Commit a6600f56 by Bartlomiej Plotka Committed by GitHub

Merge pull request #7368 from prometheus/bugfix-cut-2.18.2-2

Cut 2.18.2 release with query bug fix
parents 1a4c97ec 0f345350
## 2.18.2 / 2020-06-09
* [BUGFIX] TSDB: Fix incorrect query results when using Prometheus with remote reads configured #7361
## 2.18.1 / 2020-05-07
* [BUGFIX] TSDB: Fixed snapshot API. #7217
......
......@@ -195,10 +195,18 @@ func TestMergeQuerierWithChainMerger(t *testing.T) {
}
qs = append(qs, tc.extraQueriers...)
merged, _, _ := NewMergeQuerier(qs[0], qs, ChainedSeriesMerge).Select(false, nil)
for merged.Next() {
mergedQuerier, _, _ := NewMergeQuerier(qs[0], qs, ChainedSeriesMerge).Select(false, nil)
// Get all merged series upfront to make sure there are no incorrectly retained shared
// buffers causing bugs.
var mergedSeries []Series
for mergedQuerier.Next() {
mergedSeries = append(mergedSeries, mergedQuerier.At())
}
testutil.Ok(t, mergedQuerier.Err())
for _, actualSeries := range mergedSeries {
testutil.Assert(t, tc.expected.Next(), "Expected Next() to be true")
actualSeries := merged.At()
expectedSeries := tc.expected.At()
testutil.Equals(t, expectedSeries.Labels(), actualSeries.Labels())
......@@ -207,7 +215,6 @@ func TestMergeQuerierWithChainMerger(t *testing.T) {
testutil.Equals(t, expErr, actErr)
testutil.Equals(t, expSmpl, actSmpl)
}
testutil.Ok(t, merged.Err())
testutil.Assert(t, !tc.expected.Next(), "Expected Next() to be false")
})
}
......
......@@ -108,26 +108,24 @@ func (q *chunkQuerierAdapter) Select(sortSeries bool, hints *SelectHints, matche
type seriesMergerAdapter struct {
VerticalSeriesMergeFunc
buf []Series
}
func (a *seriesMergerAdapter) Merge(s ...Labels) Labels {
a.buf = a.buf[:0]
buf := make([]Series, 0, len(s))
for _, ser := range s {
a.buf = append(a.buf, ser.(Series))
buf = append(buf, ser.(Series))
}
return a.VerticalSeriesMergeFunc(a.buf...)
return a.VerticalSeriesMergeFunc(buf...)
}
type chunkSeriesMergerAdapter struct {
VerticalChunkSeriesMergerFunc
buf []ChunkSeries
}
func (a *chunkSeriesMergerAdapter) Merge(s ...Labels) Labels {
a.buf = a.buf[:0]
buf := make([]ChunkSeries, 0, len(s))
for _, ser := range s {
a.buf = append(a.buf, ser.(ChunkSeries))
buf = append(buf, ser.(ChunkSeries))
}
return a.VerticalChunkSeriesMergerFunc(a.buf...)
return a.VerticalChunkSeriesMergerFunc(buf...)
}
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