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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-4769) Handle possibly duplicated discovery messages
Date Thu, 02 Mar 2017 11:58:45 GMT
Vladimir Ozerov created IGNITE-4769:
---------------------------------------

             Summary: Handle possibly duplicated discovery messages
                 Key: IGNITE-4769
                 URL: https://issues.apache.org/jira/browse/IGNITE-4769
             Project: Ignite
          Issue Type: Sub-task
          Components: SQL
            Reporter: Vladimir Ozerov
             Fix For: 2.0


*Problem*
It is known that discovery message notifications could be invoked more than once in case of
unsuccessful concurrent topology changes. We need to protect DDL logic from it somehow.

*Proposed solution*
1) Add bounded set holding unique operation IDs.
2) Ignore init/ack message when ID already exists in history set.
3) Control maximum history size through system property.



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