[jira] [Created] (OAK-7495) async,sync index not synchronous

["Stefan Egli (JIRA)" <ji...@apache.org>]

Stefan Egli created OAK-7495:
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             Summary: async,sync index not synchronous
                 Key: OAK-7495
                 URL: https://issues.apache.org/jira/browse/OAK-7495
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: indexing
    Affects Versions: 1.6.1
            Reporter: Stefan Egli
         Attachments: GetJobVerifier.java, slingeventJob.-1.tidy.json

On an oak 1.6.1 (AEM 6.3) a suspicious behaviour was detected, where in Sling an addJob followed by a getJobById (in a different thread though, but perhaps would also fail in same thread) was not seeing the job that was just created.

To give a bit more background, in Sling getJobById results in a query. That query uses an index which is built using {{"async, sync"}}. So the assumption is that the index is actually synchronous. But a test reproducing initially mentioned scenario showed the opposite.

Attached:
*  [^GetJobVerifier.java] a Sling job test case that has 2 threads: a thread that does addJob, adds the resulting jobId to a list (synchronized). and a second thread that reads the jobId off that list and does a getJobById. That getJobById should find the job, as it was just created (how else could you figure out the jobId) - but sometimes it FAILs (see system out FAIL)
*  [^slingeventJob.-1.tidy.json] the index definition showing it is indeed "async, sync"

/cc [~catholicon]



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