tkalkirill commented on code in PR #1530:
URL: https://github.com/apache/ignite-3/pull/1530#discussion_r1081197136


##########
modules/storage-rocksdb/src/main/java/org/apache/ignite/internal/storage/rocksdb/RocksDbTableStorage.java:
##########
@@ -635,19 +644,117 @@ private static ColumnFamilyDescriptor 
sortedIndexCfDescriptor(String cfName, Sor
 
     @Override
     public CompletableFuture<Void> startRebalancePartition(int partitionId) {
-        // TODO: IGNITE-18027 Implement
-        throw new UnsupportedOperationException();
+        return inBusyLock(busyLock, () -> {
+            RocksDbMvPartitionStorage mvPartitionStorage = 
getMvPartitionBusy(partitionId);
+
+            if (mvPartitionStorage == null) {
+                throw new 
StorageRebalanceException(createMissingMvPartitionErrorMessage(partitionId));
+            }
+
+            assert !destroyFutureByPartitionId.containsKey(partitionId) : 
mvPartitionStorage.createStorageInfo();
+
+            try (WriteBatch writeBatch = new WriteBatch()) {
+                mvPartitionStorage.startRebalance(writeBatch);
+
+                getHashIndexStorages(partitionId).forEach(index -> 
index.startRebalance(writeBatch));
+                getSortedIndexStorages(partitionId).forEach(index -> 
index.startRebalance(writeBatch));
+
+                db.write(writeOptions, writeBatch);
+
+                CompletableFuture<Void> rebalanceFuture = 
completedFuture(null);

Review Comment:
   Fix it



##########
modules/storage-rocksdb/src/main/java/org/apache/ignite/internal/storage/rocksdb/RocksDbTableStorage.java:
##########
@@ -635,19 +644,117 @@ private static ColumnFamilyDescriptor 
sortedIndexCfDescriptor(String cfName, Sor
 
     @Override
     public CompletableFuture<Void> startRebalancePartition(int partitionId) {
-        // TODO: IGNITE-18027 Implement
-        throw new UnsupportedOperationException();
+        return inBusyLock(busyLock, () -> {
+            RocksDbMvPartitionStorage mvPartitionStorage = 
getMvPartitionBusy(partitionId);
+
+            if (mvPartitionStorage == null) {
+                throw new 
StorageRebalanceException(createMissingMvPartitionErrorMessage(partitionId));
+            }
+
+            assert !destroyFutureByPartitionId.containsKey(partitionId) : 
mvPartitionStorage.createStorageInfo();
+
+            try (WriteBatch writeBatch = new WriteBatch()) {
+                mvPartitionStorage.startRebalance(writeBatch);
+
+                getHashIndexStorages(partitionId).forEach(index -> 
index.startRebalance(writeBatch));
+                getSortedIndexStorages(partitionId).forEach(index -> 
index.startRebalance(writeBatch));
+
+                db.write(writeOptions, writeBatch);
+
+                CompletableFuture<Void> rebalanceFuture = 
completedFuture(null);
+
+                CompletableFuture<Void> previousRebalanceFuture = 
rebalanceFutureByPartitionId.putIfAbsent(partitionId, rebalanceFuture);
+
+                assert previousRebalanceFuture == null : 
mvPartitionStorage.createStorageInfo();
+
+                return rebalanceFuture;
+            } catch (RocksDBException e) {
+                throw new StorageRebalanceException(
+                        "Error when trying to start rebalancing storage: " + 
mvPartitionStorage.createStorageInfo(),
+                        e
+                );
+            }
+        });
     }
 
     @Override
     public CompletableFuture<Void> abortRebalancePartition(int partitionId) {
-        // TODO: IGNITE-18027 Implement
-        throw new UnsupportedOperationException();
+        return inBusyLock(busyLock, () -> {
+            RocksDbMvPartitionStorage mvPartitionStorage = 
getMvPartitionBusy(partitionId);
+
+            if (mvPartitionStorage == null) {
+                throw new 
StorageRebalanceException(createMissingMvPartitionErrorMessage(partitionId));
+            }
+
+            CompletableFuture<Void> rebalanceFuture = 
rebalanceFutureByPartitionId.remove(partitionId);
+
+            if (rebalanceFuture == null) {
+                return completedFuture(null);
+            }
+
+            return rebalanceFuture.thenAccept(unused -> {

Review Comment:
   Fix it



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