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From "Alex Rudyy (Jira)" <j...@apache.org>
Subject [jira] [Assigned] (QPID-8398) [Broker-J] [AMQP 0-9] Improve heap usage utilization by small transient messages with headers
Date Wed, 08 Jan 2020 10:18:00 GMT

     [ https://issues.apache.org/jira/browse/QPID-8398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Rudyy reassigned QPID-8398:
--------------------------------

    Assignee: Alex Rudyy

> [Broker-J] [AMQP 0-9] Improve heap usage utilization by small transient messages with
headers
> ---------------------------------------------------------------------------------------------
>
>                 Key: QPID-8398
>                 URL: https://issues.apache.org/jira/browse/QPID-8398
>             Project: Qpid
>          Issue Type: Bug
>          Components: Broker-J
>    Affects Versions: qpid-java-broker-7.1.0, qpid-java-broker-7.1.1, qpid-java-broker-7.1.2,
qpid-java-broker-7.1.3, qpid-java-broker-7.1.4, qpid-java-broker-7.1.5, qpid-java-broker-7.1.6
>            Reporter: Alex Rudyy
>            Assignee: Alex Rudyy
>            Priority: Major
>             Fix For: qpid-java-broker-8.0.0, qpid-java-broker-7.1.7
>
>
> The Qpid Broker can crash with OutOfMemoryError when small  transient messages with
decoded headers occupy the entire heap without triggering the flow to disk. The direct memory
utilization by the messages is below the flow to disk threshold. As result, the decoded message
headers  are accumulated in heap and can cause OutOfMemoryError.
> The heap utilization can be improved by using {{SoftReferences}} for decoded headers.
That should allow to GC the headers on running into heap OutOfMemory conditions
>  



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