[YARN-2819] NPE in ATS Timeline Domains when upgrading from 2.4 to 2.6

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.6.0
• Component/s: timelineserver
• Labels: Upgrade
• Target Version/s: 2.6.0
• Assignee: Zhijie Shen
• Reporter: Gopal Vijayaraghavan
• Created: 06/Nov/14 18:27
• Updated: 01/Dec/14 03:08
• Resolved: 08/Nov/14 00:16

Description

Caused by: java.lang.NullPointerException
        at java.lang.String.<init>(String.java:554)
        at org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore.put(LeveldbTimelineStore.java:873)
        at org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore.put(LeveldbTimelineStore.java:1014)
        at org.apache.hadoop.yarn.server.timeline.TimelineDataManager.postEntities(TimelineDataManager.java:330)
        at org.apache.hadoop.yarn.server.timeline.webapp.TimelineWebServices.postEntities(TimelineWebServices.java:260)

triggered by

entity.getRelatedEntities();
...
            } else {
              byte[] domainIdBytes = db.get(createDomainIdKey(
                  relatedEntityId, relatedEntityType, relatedEntityStartTime));
              // This is the existing entity
              String domainId = new String(domainIdBytes);
              if (!domainId.equals(entity.getDomainId())) {

The new String(domainIdBytes); throws an NPE.