[pinot] 01/01: Check if participantHistory is null in isInstanceOfflineFor method

[jlli]

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

jlli pushed a commit to branch check-participantHistory
in repository https://gitbox.apache.org/repos/asf/pinot.git

commit ee4f075d1234fba1f824cae58be06ac5e763d060
Author: Jack Li(Analytics Engineering) <j...@jlli-mn1.linkedin.biz>
AuthorDate: Tue Feb 8 17:42:59 2022 -0800

    Check if participantHistory is null in isInstanceOfflineFor method
---
 .../apache/pinot/controller/helix/core/PinotHelixResourceManager.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git 
a/pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
 
b/pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
index 9e36e19..938422c 100644
--- 
a/pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
+++ 
b/pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
@@ -461,6 +461,10 @@ public class PinotHelixResourceManager {
       return false;
     }
     ParticipantHistory participantHistory = 
_helixDataAccessor.getProperty(_keyBuilder.participantHistory(instanceId));
+    // returns false if there is no history for this participant.
+    if (participantHistory == null) {
+      return false;
+    }
     long lastOfflineTime = participantHistory.getLastOfflineTime();
     // returns false if the last offline time is a negative number.
     if (lastOfflineTime < 0) {

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