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Randall Hauch
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on 23 Sep 11
MODE-1224 Improved restart performance
Added quite a few debug logging statements to help identify the issue with startup times. Also added … Show more
MODE-1224 Improved restart performance

Added quite a few debug logging statements to help identify the issue with startup times. Also added two info-level log messages around the node registration activity.

Created a test case that uses a slightly-modified EDS configuration (different index location in 'target' area, HSQLDB stored on disk in 'target' area), and starts then restarts the engine.

I was able to see the problem, and I believe it is solely because of the re-registration of the node types listed in the configuration file. I then changed the registration process to allow a flag that will not re-register the node type if a node type already exists with the same name (there was already a flag to fail if the node type exists), and changed the startup to a) not fail but b) to skip the registration for any node type that already exists.

After implementing this change, restarting appears to be significantly faster. If fact, my tests show that the time to register the node types in subsequent restarts goes from minutes to ~0.02 seconds.

All unit and integration tests pass.

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