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https://issues.apache.org/jira/browse/FLINK-4399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922307#comment-16922307
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Biao Liu commented on FLINK-4399:
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Ah, yes, I mean "it's not a critical issue".
> Add support for oversized messages
> ----------------------------------
>
> Key: FLINK-4399
> URL: https://issues.apache.org/jira/browse/FLINK-4399
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Environment: FLIP-6 feature branch
> Reporter: Stephan Ewen
> Assignee: Biao Liu
> Priority: Major
> Labels: flip-6
>
> Currently, messages larger than the maximum Akka Framesize cause an error
> when being transported. We should add a way to pass messages that are larger
> than the Framesize, as may happen for:
> - {{collect()}} calls that collect large data sets (via accumulators)
> - Job submissions and operator deployments where the functions closures are
> large (for example because it contains large pre-loaded data)
> - Function restore in cases where restored state is larger than
> checkpointed state (union state)
> I suggest to use the {{BlobManager}} to transfer large payload.
> - On the sender side, oversized messages are stored under a transient blob
> (which is deleted after first retrieval, or after a certain number of minutes)
> - The sender sends a "pointer to blob message" instead.
> - The receiver grabs the message from the blob upon receiving the pointer
> message
> The RPC Service should be optionally initializable with a "large message
> handler" which is internally the {{BlobManager}}.
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