Vladislav Pyatkov created IGNITE-24053:
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             Summary: Attach observation timestamp for JDBC client requests
                 Key: IGNITE-24053
                 URL: https://issues.apache.org/jira/browse/IGNITE-24053
             Project: Ignite
          Issue Type: Improvement
            Reporter: Vladislav Pyatkov


h3. Motivation
Among the JDBC requests, we can have read requests that required an observation 
timestamp to calculate the read timestamp correctly.
It is already done for SQL requests ({{ClientSqlExecuteRequest, 
ClientSqlExecuteBatchRequest,  ClientSqlExecuteScriptRequest}}) and have to do 
the same for the JDBC.

h3. Definition of done
* JdbcQueryEventHandlerImpl#timestampTracker oughе to disappear
* The observation timestamp should be tracked only on the client side 
(dedicated for any client)



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