korlov42 commented on code in PR #5069:
URL: https://github.com/apache/ignite-3/pull/5069#discussion_r1924929528
##########
modules/transactions/src/main/java/org/apache/ignite/internal/tx/InternalTransaction.java:
##########
@@ -91,6 +91,13 @@ public interface InternalTransaction extends Transaction {
*/
HybridTimestamp startTimestamp();
+ /**
+ * Returns an observable timestamp provided by the observable timestamp
tracker.
+ *
+ * @return observable timestamp, or {@code null} if the observable time
has not yet been initialized/updated.
+ */
+ @Nullable HybridTimestamp observableTimestamp();
Review Comment:
I would suggest to save tracker in `JdbcConnectionContext` along with
created transaction instead of adding a new method to `InternalTransaction`
##########
modules/jdbc/src/main/java/org/apache/ignite/jdbc/IgniteJdbcDriver.java:
##########
@@ -161,6 +162,9 @@ public class IgniteJdbcDriver implements Driver {
/** Minor version. */
private static final int MINOR_VER = ProtocolVersion.LATEST_VER.minor();
+ /** Tracker of the latest time observed by client. */
+ private final HybridTimestampTracker observableTimeTracker =
HybridTimestampTracker.atomicTracker(null);
Review Comment:
it would be nice to throw a few lines describing rationale behind having a
single tracker per driver
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