Bug 972574
| Summary: | NPE in DataMigrator with empty (1h) table | ||
|---|---|---|---|
| Product: | [Other] RHQ Project | Reporter: | Heiko W. Rupp <hrupp> |
| Component: | Monitoring | Assignee: | Nobody <nobody> |
| Status: | NEW --- | QA Contact: | |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 4.8 | CC: | hrupp |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | Bug | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Description of problem: $ java -jar target/migrator-executable/data-migrator-4.8.0-SNAPSHOT.jar --cassandra-port=9142 Estimation process - starting java.lang.NullPointerException at org.rhq.server.metrics.migrator.workers.MetricsIndexUpdateAccumulator.getLastAggregationTime(MetricsIndexUpdateAccumulator.java:158) at org.rhq.server.metrics.migrator.workers.MetricsIndexUpdateAccumulator.<init>(MetricsIndexUpdateAccumulator.java:77) This happens when e.g. the 1h (and probably the 6h) table has no data in it. Problem is in org.rhq.server.metrics.migrator.workers.MetricsIndexUpdateAccumulator#getLastAggregationTime [...] if (duration != null && queryString != null) { Query query = session.createSQLQuery(queryString); String queryResult = query.uniqueResult().toString(); Here query.uniqueResult() can be null if no data is present