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From "Andrew Mashenkov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11483) Make system cache non-persistent and deprecate.
Date Tue, 05 Mar 2019 12:38:00 GMT
Andrew Mashenkov created IGNITE-11483:

             Summary: Make system cache non-persistent and deprecate.
                 Key: IGNITE-11483
                 URL: https://issues.apache.org/jira/browse/IGNITE-11483
             Project: Ignite
          Issue Type: Bug
          Components: cache, compute, igfs, managed services
            Reporter: Andrew Mashenkov

For now, persistent Default Region makes System cache persistent as well (same correct for
non-persistent region). This behavior is non-obvious and it may causes unpredictable issues.

We have number of components that uses system cache, some of them doesn't need system cache
to be persistent, while other ok with it:
 * DataStructures - datastructures persistence should be configured in it's configuration.
Moreover, some structures looks broken as CacheDataStructureManages uses in-memory maps.
 * Compute - most likely persistence not needed.
 * Services - metastore can be used instead.
 * Igfs - candidate to remove in 3.0


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