[iotdb] 01/02: fix npe

[marklau99]

This is an automated email from the ASF dual-hosted git repository.

marklau99 pushed a commit to branch fix-npe-in-cpu-metrics
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit c5ece432c4c2b928910133d57a56ebffd9ff98ab
Author: Liu Xuxin <liuxu...@outlook.com>
AuthorDate: Mon Jun 19 10:01:27 2023 +0800

    fix npe
---
 .../java/org/apache/iotdb/metrics/metricsets/cpu/CpuUsageMetrics.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/cpu/CpuUsageMetrics.java
 
b/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/cpu/CpuUsageMetrics.java
index 56a2864f22f..2d8a7323feb 100644
--- 
a/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/cpu/CpuUsageMetrics.java
+++ 
b/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/cpu/CpuUsageMetrics.java
@@ -251,12 +251,12 @@ public class CpuUsageMetrics implements IMetricSet {
     for (ThreadInfo threadInfo : threadInfos) {
       long id = threadInfo.getThreadId();
       long beforeCpuTime = beforeThreadCpuTime.getOrDefault(id, 0L);
-      long afterCpuTime = afterThreadCpuTime.get(id);
+      long afterCpuTime = afterThreadCpuTime.getOrDefault(id, 0L);
       if (afterCpuTime < beforeCpuTime) {
         continue;
       }
       long beforeUserTime = beforeThreadUserTime.getOrDefault(id, 0L);
-      long afterUserTime = afterThreadUserTime.get(id);
+      long afterUserTime = afterThreadUserTime.getOrDefault(id, 0L);
       totalIncrementTime += afterCpuTime - beforeCpuTime;
       String module = getThreadModuleById(id, threadInfo);
       String pool = getThreadPoolById(id, threadInfo);