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From "Sergey Chugunov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-7258) BinaryMetadata may be lost if node with outdated metadata becomes a coordinator
Date Wed, 20 Dec 2017 10:41:00 GMT
Sergey Chugunov created IGNITE-7258:
---------------------------------------

             Summary: BinaryMetadata may be lost if node with outdated metadata becomes a
coordinator
                 Key: IGNITE-7258
                 URL: https://issues.apache.org/jira/browse/IGNITE-7258
             Project: Ignite
          Issue Type: Bug
    Affects Versions: 2.1
            Reporter: Sergey Chugunov
            Assignee: Sergey Chugunov
            Priority: Critical
             Fix For: 2.4


Consider the following scenario in PDS-enabled mode:

# Multinode cluster is up and running, BinaryMetadata for some type is created and spread
across all nodes.
# Node#1 leaves the cluster, then BinaryMetadata is updated one more time.
# All cluster is restarted *and Node#1 becomes a coordinator*.

As in current implementation coordinator is considered to own a master copy of BinaryMetadata,
it spreads its out-of-date version to all nodes so update from step#2 is lost.

We need to improve BinaryMetadata exchange protocol so nodes on join will send their version
of BinaryMetadata to coordinator so it is able to update its own local version.





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