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From GitBox <...@apache.org>
Subject [GitHub] [ambari] aonishuk opened a new pull request #3265: AMBARI-25590. Ambari Get Hosts API returning empty json (aonishuk)
Date Tue, 24 Nov 2020 11:49:36 GMT

aonishuk opened a new pull request #3265:
URL: https://github.com/apache/ambari/pull/3265


   ## What changes were proposed in this pull request?
   
   When API calls in Ambari fail due to DB exceptions. Ambari re-populates caches from the
DB. This causes situation that threads have different instances of ClusterImpl, so we need
an equals and hashCode implemented. So that look-up in Sets/Maps/comparison worked.
   
   ## How was this patch tested?
   We were able to find a stable way to reproduce the issue by feeding an API request that
produces DB exception. Once we applied the patch this was no longer reproducible.


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