[KYLIN-3609] NPE from QueryMetricsFacade#updateMetricsToReservoir

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Cannot Reproduce
• Assignee: Xiaoxiang Yu
• Reporter: Ted Yu
• Created: 02/Oct/18 21:06
• Updated: 07/Feb/20 07:04
• Resolved: 17/Apr/19 11:51

Description

When running test suite, I saw the following in test output:

2018-10-02 20:59:20,415 WARN  [Query c8f42f2e-8c77-2bfc-97ab-053fbeb7c86e-1] service.QueryService:423 : Write metric error.
java.lang.NullPointerException
  at org.apache.kylin.rest.metrics.QueryMetricsFacade.updateMetricsToReservoir(QueryMetricsFacade.java:148)
  at org.apache.kylin.rest.metrics.QueryMetricsFacade.updateMetrics(QueryMetricsFacade.java:74)
  at org.apache.kylin.rest.service.QueryService.recordMetric(QueryService.java:505)
  at org.apache.kylin.rest.service.QueryService.doQueryWithCache(QueryService.java:421)
  at org.apache.kylin.rest.service.QueryService.doQueryWithCache(QueryService.java:353)
  at org.apache.kylin.rest.controller.QueryController.query(QueryController.java:87)
  at org.apache.kylin.rest.controller.QueryControllerTest.testQueryException(QueryControllerTest.java:63)

It seems sqlResponse.getResults() returned null.