[Kernel]Remove two file IO in CRC loading by reusing log listing #4112
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Which Delta project/connector is this regarding?
Description
Incremental CRC loading for P&M was added in #4077.
For snapshot N, we try to read N.crc, if N.crc missing, we list CRC files and find the one up to N-100. These two file listing operation could be actually avoided, because we have already listed files under _delta_log folder.
This PR collects latest CRC in the first file listing and remove two unnecessary IO.
How was this patch tested?
Does this PR introduce any user-facing changes?