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[WIP] streamingccl: add polling processor to check for cutover signal #60763

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[WIP] streamingccl: add polling processor to check for cutover signal #60763

wants to merge 1 commit into from

Commits on Feb 19, 2021

  1. [WIP] streamingccl: add polling processor to check for cutover signal 

    This change adds a new polling processor to the stream ingestion flow.
This processor is currently responsible for polling the systm.jobs table
and checking if a cutover has been signalled. If it finds a signal it
uses a mirror router to propagate that signal to all the downstream
stream ingestion processors. The teardown then ensues and eventually
pushes a "cutover" meta record back to the stream ingestion resumer.

This change moves the revert range request from OnFailOrCancel, to be
invoked when the resumer gets this "cutover" meta record.

Release note: None
    @adityamaru
    adityamaru committed Feb 19, 2021
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