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Date: Fri, 21 Jul 2017 10:51:00 +0000 (UTC)
From: "Vikas Vishwakarma (JIRA)" <jira@apache.org>
To: dev@phoenix.apache.org
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Subject: [jira] [Created] (PHOENIX-4044) Orphaned chunk of 15650000 bytes
 found during finalize
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archived-at: Fri, 21 Jul 2017 10:51:05 -0000

Vikas Vishwakarma created PHOENIX-4044:
------------------------------------------

             Summary: Orphaned chunk of 15650000 bytes found during finalize
                 Key: PHOENIX-4044
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4044
             Project: Phoenix
          Issue Type: Bug
    Affects Versions: 4.10.0
            Reporter: Vikas Vishwakarma
            Priority: Minor


Observing these WARNINGS in the RegionServer logs similar to what is discussed PHOENIX-1011
2017-07-20 10:10:00,421 WARN  [Finalizer] memory.GlobalMemoryManager - Orphaned chunk of 15650000 bytes found during finalize
2017-07-20 10:10:00,421 WARN  [Finalizer] memory.GlobalMemoryManager - Orphaned chunk of 15650000 bytes found during finalize
2017-07-20 10:10:21,153 WARN  [Finalizer] memory.GlobalMemoryManager - Orphaned chunk of 15650000 bytes found during finalize

I am not able to identify the exact sequence of events that lead to these warnings but the scenario we were testing is as follows:
We were trying to simulate Index update failures for one of our tests to check index rebuild scenario
For this we did a close_region on one of the index table regions so that all updates on this region will fail with NSRE
With this we start seeing index update failures, scanner lease expiries, etc 
After sometime we re-assign the closed_region to trigger index rebuild
We start seeing these WARNING messages related to Orphaned chunks in Regionserver logs in this case


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