Thomas Mueller created SLING-8408:
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             Summary: ReplicationQueueHealthCheck and 
DistributionQueueHealthCheck should deal with failing queries
                 Key: SLING-8408
                 URL: https://issues.apache.org/jira/browse/SLING-8408
             Project: Sling
          Issue Type: Improvement
          Components: Content Distribution
            Reporter: Thomas Mueller


The following health checks indirectly run queries which might fail:
 * ReplicationQueueHealthCheck: 
sling/contrib/extensions/replication/core/src/main/java/org/apache/sling/replication/monitor/ReplicationQueueHealthCheck.java
 * DistributionQueueHealthCheck: 
sling/contrib/extensions/distribution/core/src/main/java/org/apache/sling/distribution/monitor/DistributionQueueHealthCheck.java

The call 
[JobManagerImpl.findJobs|https://github.com/apache/sling-org-apache-sling-event/blob/master/src/main/java/org/apache/sling/event/impl/jobs/JobManagerImpl.java#L373],
 which can throw an exception with SLING-8407, if the index is not yet 
available. The health checks should catch this exception and return 
HEALTH_CHECK_ERROR for this case.



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