tkalkirill commented on code in PR #1286:
URL: https://github.com/apache/ignite-3/pull/1286#discussion_r1010761336
##########
modules/storage-api/src/main/java/org/apache/ignite/internal/storage/engine/MvTableStorage.java:
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@@ -162,4 +163,32 @@ default IndexStorage getOrCreateIndex(int partitionId,
UUID indexId) {
* @throws StorageException If an error has occurred during the
destruction of the storage.
*/
void destroy() throws StorageException;
+
+ /**
+ * Prepares the partition storage for rebalancing: makes a backup and
creates a new one.
+ *
+ * @param partitionId Partition ID.
+ * @param executor Executor.
+ * @return Future, if completed without errors, then {@link
#getMvPartition} will return a new (empty) partition storage.
+ */
+ CompletableFuture<Void> startRebalanceMvPartition(int partitionId,
Executor executor);
+
+ /**
+ * Aborts rebalancing of the partition storage if it was started: restores
the backup and deletes the new one.
+ *
+ * @param partitionId Partition ID.
+ * @param executor Executor.
+ * @return Future, upon completion of which (even if with an error) {@link
#getMvPartition} will return the partition storage restored
+ * from the backup.
+ */
+ CompletableFuture<Void> abortRebalanceMvPartition(int partitionId,
Executor executor);
+
+ /**
+ * Finishes a successful partition storage rebalance if it has been
started: deletes the backup and saves the new one.
Review Comment:
Tried to fix it
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