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https://issues.apache.org/jira/browse/IGNITE-17372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Bessonov updated IGNITE-17372:
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Release Note: (was: Looks good to me. Thank you for the contribution!)
> Implement DeltaFilePageStore
> ----------------------------
>
> Key: IGNITE-17372
> URL: https://issues.apache.org/jira/browse/IGNITE-17372
> Project: Ignite
> Issue Type: Improvement
> Reporter: Kirill Tkalenko
> Assignee: Kirill Tkalenko
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-alpha6
>
> Time Spent: 7h
> Remaining Estimate: 0h
>
> For the new checkpoint, we need to implement *DeltaFilePageStore*.
> Will consist of:
> * File header, similar to *FilePageStore*, but in addition it will store a
> sorted list of pageIdx in which it will be stored;
> * Pages themselves, sorted by pageIdx.
> Some implementation notes
> * Format of the file name for the *DeltaFilePageStore* is
> *part-%d-delta-%d.bin* for example *part-1-delta-3.bin* where the first digit
> is the partition identifier, and the second is the serial number of the delta
> file for this partition;
> * Before creating *part-1-delta-3.bin*, a temporary file
> *part-1-delta-3.bin.tmp* will be created at the checkpoint first, then
> filled, then renamed to *part-1-delta-3.bin*;
> * In each delta file we will store the
> *org.apache.ignite.internal.storage.pagememory.io.PartitionMetaIo*, which
> will be the first page in this file, and it will be special.
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