Function TestStoreCollHistograms

store_test.go:1902–1977

(t *testing.T)

}

func TestStoreCollHistograms(t *testing.T) {
	tmpDir, _ := ioutil.TempDir("", "mossStore")
	defer os.RemoveAll(tmpDir)

	itemCount := 10000
	batchCount := 100

	// Open store, coll and write about 10000 items
	store, coll := openStoreAndWriteNItems(
		t, tmpDir, itemCount, batchCount, false)
	coll.Close()
	store.Close()

	shistograms := store.Histograms()
	numHistograms := len(shistograms)

	if shistograms["PersistUsecs"].TotCount == 0 {
		t.Errorf("Expected a few entries for PersistUsecs!")
	}

	if shistograms["CompactUsecs"].TotCount != 0 {
		t.Errorf("Expected no entries for CompactUsecs!")
	}

	if shistograms["PersistFooterUsecs"].TotCount !=
		shistograms["PersistUsecs"].TotCount {
		t.Errorf("Expected PersisterFooterUsecs to match PersistUsecs!")
	}

	chistograms := coll.Histograms()

	if chistograms["ExecuteBatchUsecs"].TotCount != uint64(batchCount) {
		t.Errorf("Unexpected number of ExecuteBatchUsecs samples!")
	}

	if chistograms["MergerUsecs"].TotCount == 0 {
		t.Errorf("Expected a few entries for MergerUsecs!")
	}

	if shistograms.AddAll(chistograms) != nil {
		t.Errorf("Expected AddAll to succeed")
	}

	if len(shistograms) != numHistograms+len(chistograms) {
		t.Errorf("shistograms carries unexpected number of histograms")
	}

	if shistograms["ExecuteBatchUsecs"] == nil ||
		shistograms["ExecuteBatchUsecs"].TotCount !=
			chistograms["ExecuteBatchUsecs"].TotCount {
		t.Errorf("Expected ExecutedBatchUsecs to match chistograms'")
	}

	if shistograms["MergerUsecs"] == nil ||
		shistograms["MergerUsecs"].TotCount !=
			chistograms["MergerUsecs"].TotCount {
		t.Errorf("Expected MergerUsecs to match chistograms'")
	}