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Posted to dev@kylin.apache.org by "Congling Xia (Jira)" <ji...@apache.org> on 2021/07/06 14:56:00 UTC

[jira] [Created] (KYLIN-5029) metrics test may fail because the cache is not refreshed

Congling Xia created KYLIN-5029:
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             Summary: metrics test may fail because the cache is not refreshed
                 Key: KYLIN-5029
                 URL: https://issues.apache.org/jira/browse/KYLIN-5029
             Project: Kylin
          Issue Type: Improvement
          Components: Tools, Build and Test
            Reporter: Congling Xia
            Assignee: Congling Xia


Tests in _org.apache.kylin.rest.metrics.QueryMetricsTest_ may fail in current CI processes. There are some "Thread.sleep(..)" in the test code to wait for metrics cache being refreshed. 

After digging into the Hadoop metrics implementation, I find that the default refreshing interval is 10 seconds. So test thread should sleep for more than 10 seconds to may sure metrics are up-to-date. I checked the sleep intervals in the test code and they are not greater than 10000 (ms). That's why CI processes fail accidentally.

It is better to configure metrics refreshing interval to a smaller value.



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