tkalkirill commented on code in PR #13080:
URL: https://github.com/apache/ignite/pull/13080#discussion_r3154222072
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modules/core/src/main/java/org/apache/ignite/transactions/Transaction.java:
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@@ -290,6 +290,57 @@ public interface Transaction extends AutoCloseable,
IgniteAsyncSupport {
*/
public void suspend() throws IgniteException;
+ /**
+ * Creates a savepoint in the current transaction.
+ * <p>
+ * Savepoints are supported only for explicit transactions with
+ * {@link TransactionConcurrency#PESSIMISTIC} concurrency. The savepoint
keeps the current transaction state and can
+ * later be used by {@link #rollbackToSavepoint(String)} to discard
changes made after it was created.
+ *
+ * @param name Savepoint name.
+ * @throws IllegalArgumentException If savepoint with the same name
already exists.
+ * @throws IgniteException If savepoints are not supported for this
transaction.
+ */
+ public void savepoint(String name);
+
+ /**
+ * Creates a savepoint in the current transaction.
+ * <p>
+ * Savepoints are supported only for explicit transactions with
+ * {@link TransactionConcurrency#PESSIMISTIC} concurrency. If {@code
overwrite} is {@code true} and a savepoint with
+ * the same name exists, the existing savepoint is replaced with a
snapshot of the current transaction state.
+ *
+ * @param name Savepoint name.
+ * @param overwrite Whether to overwrite an existing savepoint with the
same name.
+ * @throws IllegalArgumentException If savepoint with the same name
already exists and {@code overwrite} is
+ * {@code false}.
+ * @throws IgniteException If savepoints are not supported for this
transaction.
+ */
+ public void savepoint(String name, boolean overwrite);
+
+ /**
+ * Rolls back transaction changes to the specified savepoint.
+ * <p>
+ * Changes made after the savepoint was created are discarded. Savepoints
created after the specified savepoint are
+ * released. The transaction remains active and can be committed or rolled
back after this method returns.
+ *
+ * @param name Savepoint name.
+ * @throws IllegalArgumentException If savepoint with the given name does
not exist.
+ * @throws IgniteException If savepoints are not supported for this
transaction.
+ */
+ public void rollbackToSavepoint(String name);
+
+ /**
+ * Releases a savepoint. If savepoint does not exist this operation does
nothing.
+ * <p>
+ * Releasing a savepoint does not roll back transaction changes. It only
removes the marker so it can no longer be
Review Comment:
Let's say we have several save points, say 4, and we release the 3rd one.
What happens to 1 and 2, will their changes also be released and what happens
with 4?
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