[jira] [Created] (QPID-8168) [Broker-J] Broker should flow to disk transient messages when heap usage reaches critical threshold in order to avoid running of heap memory due to consumption of heap by transient message metadata

["Alex Rudyy (JIRA)" <ji...@apache.org>]

Alex Rudyy created QPID-8168:
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             Summary: [Broker-J] Broker should flow to disk transient messages when heap usage reaches critical threshold in order to avoid running of heap memory due to consumption of heap by transient message metadata
                 Key: QPID-8168
                 URL: https://issues.apache.org/jira/browse/QPID-8168
             Project: Qpid
          Issue Type: Bug
          Components: Broker-J
    Affects Versions: qpid-java-broker-7.0.1, qpid-java-broker-7.0.0, qpid-java-6.0.8, qpid-java-broker-7.0.2, qpid-java-broker-7.0.3, qpid-java-6.1.6, qpid-java-broker-7.1.0
            Reporter: Alex Rudyy


The flow to disk is currently triggered when direct memory usage reaches predefined threshold ({{broker.flowToDiskThreshold}} which is set to 75% of direct memory size by default). However, in some situations (for example, when direct memory size is big and heap memory size is small), the direct memory threshold is not reached but the heap is fully occupied by transient messages data, the broker runs out of heap memory.

The broker behaviour can be improved by triggering flow to disk when a heap occupancy reaches the critical threshold in addition to direct memory usage threshold.





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