Alex Rudyy created QPID-8398:
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Summary: [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-7.1.6, qpid-java-broker-7.1.5,
qpid-java-broker-7.1.4, qpid-java-broker-7.1.3, qpid-java-broker-7.1.2,
qpid-java-broker-7.1.1, qpid-java-broker-7.1.0
Reporter: Alex Rudyy
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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