Ilya Shishkov created IGNITE-28789:
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             Summary: Use Message DTO to transfer DiscoveryDataClusterState
                 Key: IGNITE-28789
                 URL: https://issues.apache.org/jira/browse/IGNITE-28789
             Project: Ignite
          Issue Type: Task
            Reporter: Ilya Shishkov
            Assignee: Ilya Shishkov
             Fix For: 2.19


Following DTO implements {{Serializable}}:
# {{CacheClientReconnectDiscoveryData}}
# {{CacheClientReconnectDiscoveryData#CacheGroupInfo}}
# {{CacheClientReconnectDiscoveryData#CacheInfo}}

They are transferred in {{DiscoveryDataBag}} ({{DiscoveryDataPacket}}) and 
should be transfromed to a {{Message}}. 

Some important tips:
# Implementation of {{Serializable}} should be removed if possible. (If not 
stored somewhere in MetaStorage, or in PDS).
# If it is difficult to transform to {{Message}}, message-clone DTO can be 
added, eg. {{QueryIndexMessage}}.
# Keep in mind {{#writeObject}} / {{#readObject}} and {{#readExternal}} / 
{{#writeExternal}} methods, if any.



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