Alexei Scherbakov created IGNITE-11058:
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Summary: Possible OOM due to large discard queue in TcpDiscoverySpi
Key: IGNITE-11058
URL: https://issues.apache.org/jira/browse/IGNITE-11058
Project: Ignite
Issue Type: Improvement
Reporter: Alexei Scherbakov
Fix For: 2.8
Currently it's necessary to store every ensured (marked withÂ
TcpDiscoveryEnsureDelivery annotation) in pending message queue until it's
discarded from coordinator for implementing guaranteed delivery, otherwise if
subsequent nodes will fail while forwarding message the guarantee couldn't be
fulfilled.
On large topologies with active changes the queue may contain many very large
messages causing heap usage bursts and possible OOM.
Possible solution:
# off-load pending messages payload to off-heap or even on disk.
# store messages in serialized form for avoiding JVM Object overhead.
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