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https://issues.apache.org/jira/browse/ARTEMIS-3021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on ARTEMIS-3021 started by Francesco Nigro.
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> OOM due to wrong CORE clustered message memory estimation
> ---------------------------------------------------------
>
> Key: ARTEMIS-3021
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3021
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Major
> Time Spent: 4h 50m
> Remaining Estimate: 0h
>
> This is affecting clustered Core messages (persistent or not).
> The process that cause the wrong estimation is:
> # add route information to the message
> # get memory estimation for paging (ie address size estimation) without
> accounting the new route information
> # get message persist size for durable append on journal/to update queue
> statistics, triggering a re-encoding
> # re-encoding (can) enlarge the message buffer to be the next power of 2
> available capacity
> The 2 fixes are:
> * getting a correct memory estimation of the message (including the added
> route information)
> * save an excessive buffer growth caused by the default Netty's
> ByteBuf::ensureWritable strategy
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