[IGNITE-6210] Inefficient memory consumption for checkpoint buffer

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.3
• Component/s: persistence
• Assignee: Dmitriy Govorukhin
• Reporter: Dmitriy Govorukhin
• Created: 29/Aug/17 10:08
• Updated: 21/Sep/17 11:28
• Resolved: 19/Sep/17 14:58

Description

Current implementation allows configure checkpoint buffer size in PersistentStoreConfiguration, but checkpoint buffer will be created for each memory configuration with size equals the one indicated in PersistentStoreConfiguration.

For example:

        PersistentStoreConfiguration prCfg = new PersistentStoreConfiguration();
        prCfg.setCheckpointingFrequency(5L * 1024L * 1024L * 1024L); // 5GB.

        MemoryConfiguration memCfg = new MemoryConfiguration();

        MemoryPolicyConfiguration pl1 = new MemoryPolicyConfiguration();

        pl1.setMaxSize(100L * 1024L * 1024L); // 100 Mb.

        MemoryPolicyConfiguration pl2 = new MemoryPolicyConfiguration();

        pl2.setMaxSize(10L * 1024L * 1024L * 1024L); // 10GB.

        memCfg.setMemoryPolicies(pl1, pl2);

pl1(max size 10Gb) will be have checkpoint buffer = 5GB and pl2(max size 100Mb) buffer= 5GB

Issue Links

• links to: GitHub Pull Request #2536