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https://issues.apache.org/jira/browse/IGNITE-19898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pavel Pereslegin reassigned IGNITE-19898:
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Assignee: Pavel Pereslegin
> SQL implicit RO transaction should used observation timestamp
> -------------------------------------------------------------
>
> Key: IGNITE-19898
> URL: https://issues.apache.org/jira/browse/IGNITE-19898
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladislav Pyatkov
> Assignee: Pavel Pereslegin
> Priority: Major
> Labels: ignite-3
>
> *Motivation*
> Reorganization of processing of RO transaction requires choosing a specific
> timestamp for an implicit RO SQL transaction.
> *Implementation notes*
> * Observable timestamp is passed through API and propagate to SQL engine.
> * SQL uses the observable timestamp when it has to start RO transaction
> (IGNITE-19887 is used to start RO transaction with specified observable
> timestamp).
> * Read timestamp, that is got through transaction API
> {{ReadOnlyTransactionImpl#readTimestamp}}, should to be available for
> invoking side.
> *Definition of done*
> * Select in an implicit transaction should execute with an observable
> timestamp (see TODO in *ClientSqlExecuteRequest*). A read timestamp, which is
> used for RO transaction calculation, returns to the invoking side.
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