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  1. Cassandra
  2. CASSANDRA-14748

Recycler$WeakOrderQueue occupies Heap

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 3.11.7, 4.0-alpha4, 4.0
    • Legacy/Core
    • None
    • The netty Cassandra using is netty-all-4.0.39.Final.jar

    • Normal

    Description

      Heap constantly high on some of the nodes in the cluster, I dump the heap and open it through Eclipse Memory Analyzer, looks like Recycler$WeakOrderQueue occupies most of the heap. 

       

      Package Retained Heap Retained Heap, %
      1. Top Dominators
      <all> 7,078,140,136 100.00% 379,627
      io 5,665,035,800 80.04% 13,306
      netty 5,665,035,800 80.04% 13,306
      util 5,568,107,344 78.67% 2,965
      Recycler$WeakOrderQueue 4,950,021,544 69.93% 2,169

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              Unassigned Unassigned
              haoxu@paloaltonetworks.com HX
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                Updated:
                Resolved: