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Posted to dev@ignite.apache.org by "Ivan Rakov (JIRA)" <ji...@apache.org> on 2017/08/10 16:00:02 UTC
[jira] [Created] (IGNITE-6033) Add sorted and multithreaded modes
in checkpoint algorithm
Ivan Rakov created IGNITE-6033:
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Summary: Add sorted and multithreaded modes in checkpoint algorithm
Key: IGNITE-6033
URL: https://issues.apache.org/jira/browse/IGNITE-6033
Project: Ignite
Issue Type: Improvement
Components: persistence
Affects Versions: 2.1
Reporter: Ivan Rakov
Assignee: Ivan Rakov
Fix For: 2.2
Sequential writes to SSD are faster than random. When we write checkpoint, we iterate through hash table, which is actually random order. We should add an option to write pages sorted by page index. It should be configured in PersistentStoreConfiguration.
Also, we already have PersistentStoreConfiguration#checkpointingThreads option, but we don't use it - we create thread pool, but submit only one task to it. This should be fixed as well.
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