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in-memory snapshots will resuse existing snapshot code when possible. So key design decisions stay the same. It assumed that reader knows and understand IEP-43. So design description will focus on difference on persistence and in-memory snapshot.
API
Creation
1. PME + Checkpoint guarantees to make sure of visibility of all dirty pages:
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DataRegionConfiguration#persistenceEnabled=false
for in-memory caches by the definition.- The same value must be for DataRegionConfiguration when cache group restored from in-memory snapshot.
- After this feature implemented
PageIO
will require to be backward compatible. - The way to restore snapshot on different topology must be further investigated.
- Empty pages of DataRegion will be written to snapshot.
- Compaction of snapshot must be further investigated.
- No concurrent snapshot operation - persistent, in-memory allowed. This can be eliminated in next phases to provide the ability to create full cluster snapshot by one command.
Discussion Links
// Links to discussions on the devlist, if applicable.
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Tickets
Jira |
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server | ASF JIRA |
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columnIds | issuekey,summary,issuetype,updated,assignee,customfield_12311032,customfield_12311037,customfield_12311022,customfield_12311027,priority,status,resolution |
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columns | key,summary,type,updated,assignee,Priority,Priority,Priority,Priority,priority,status,resolution |
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maximumIssues | 20 |
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jqlQuery | project = Ignite AND labels IN (IEP-109) order by key |
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serverId | 5aa69414-a9e9-3523-82ec-879b028fb15b |
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