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When the supplier node receives the cache partition file demand request it will send the file over the CommunicationSpi. The cache partition file can be concurrently updated by checkpoint thread during its transmission. To guarantee the file consistency Сheckpointer must use Copy-on-Write [3] tehnique and save a copy of updated chunk into the temporary file.

The checkpoint process description on the supplier node – items 4, 5, 6, 7, 8 of the Process Overview.

(new) Catch-up temporary WAL

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