Arvid Heise created FLINK-19801:
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Summary: Add support for virtual channels
Key: FLINK-19801
URL: https://issues.apache.org/jira/browse/FLINK-19801
Project: Flink
Issue Type: Sub-task
Components: Runtime / Checkpointing
Affects Versions: 1.12.0
Reporter: Arvid Heise
Assignee: Arvid Heise
During rescaling of unaligned checkpoints, if state from multiple former
channels are read on input or output side to recover a specific channel, then
these buffers are multiplexed on output side and demultiplexed on input side to
guarantee a consistent recovery of spanning records.
Channels use the mapping of FLINK-19533 to infer the need for virtual channels
and distribute the needed resources. Virtual channels are removed on the
EndOfChannelRecovery epoch marker.
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