adds the ability to read chunkFormatV3 while writing v2 (#2984)

(cherry picked from commit a8af1c0)
grafana · Dec 10, 2020 · 35a627d · 35a627d
1 parent fbf1790
commit 35a627d
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/pkg/chunkenc/memchunk.go b/pkg/chunkenc/memchunk.go
@@ -166,7 +166,7 @@ func NewMemChunk(enc Encoding, blockSize, targetSize int) *MemChunk {
 		blocks:     []block{},
 
 		head:   &headBlock{},
-		format: chunkFormatV3,
+		format: chunkFormatV2,
 
 		encoding: enc,
 	}

diff --git a/pkg/chunkenc/memchunk_test.go b/pkg/chunkenc/memchunk_test.go
@@ -256,6 +256,7 @@ func TestRoundtripV3(t *testing.T) {
 	for _, enc := range testEncoding {
 		t.Run(enc.String(), func(t *testing.T) {
 			c := NewMemChunk(enc, testBlockSize, testTargetSize)
+			c.format = chunkFormatV3
 			_ = fillChunk(c)
 
 			b, err := c.Bytes()