kazusa
/
skywalking-java
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix NPE when fetch empty readHeatMap metrics. (#4891)

This commit is contained in:
Jared Tan 2020-06-09 21:22:12 +08:00 committed by GitHub
parent d982576af4
commit 202d5711d4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/type/HeatMap.java
View File

@ -34,7 +34,7 @@ import org.apache.skywalking.oap.server.core.analysis.metrics.DataTable;
@Getter
public class HeatMap {
private List<HeatMapColumn> values = new ArrayList<>(10);
private List<Bucket> buckets = null;
private List<Bucket> buckets = new ArrayList<>();
public void addBucket(Bucket bucket) {
this.buckets.add(bucket);
@ -50,8 +50,7 @@ public class HeatMap {
DataTable dataset = new DataTable(rawdata);
final List<String> sortedKeys = dataset.sortedKeys(new KeyComparator(true));
if (buckets == null) {
buckets = new ArrayList<>(dataset.size());
if (buckets.isEmpty()) {
for (int i = 0; i < sortedKeys.size(); i++) {
final Bucket bucket = new Bucket();
final String minValue = sortedKeys.get(i);