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From "Ivan Bessonov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11416) DistributedMetaStorage improvements
Date Tue, 26 Feb 2019 07:56:00 GMT
Ivan Bessonov created IGNITE-11416:

             Summary: DistributedMetaStorage improvements
                 Key: IGNITE-11416
                 URL: https://issues.apache.org/jira/browse/IGNITE-11416
             Project: Ignite
          Issue Type: Improvement
            Reporter: Ivan Bessonov
            Assignee: Ivan Bessonov

We need following improvements:
 * do not write the same value twice in a row, this would lead to history pollution;
 * add "putAll" functionality on binary level, not in public API yet. This would simplify
the migration in future;
 * do not use "*HistoryItem" class for everything, this is not conventional;
 * retrieve "dmsVer" from cluster on handshake, this would help to reduce joining node DataBag
size drastically;
 * add "isEmpty()" or "long getVersion()" method to metastorage, will be helpful for components
that use it;
 * there has to be an ability to read data on client nodes, maybe write as well, not sure

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