rkhachatryan commented on code in PR #27035: URL: https://github.com/apache/flink/pull/27035#discussion_r2392662817
########## flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/state/rocksdb/restore/RestoredDBInstance.java: ########## @@ -0,0 +1,171 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.state.rocksdb.restore; + +import org.apache.flink.runtime.state.IncrementalLocalKeyedStateHandle; +import org.apache.flink.runtime.state.RegisteredStateMetaInfoBase; +import org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot; +import org.apache.flink.state.rocksdb.RocksDBOperationUtils; +import org.apache.flink.state.rocksdb.ttl.RocksDbTtlCompactFiltersManager; +import org.apache.flink.util.IOUtils; + +import org.rocksdb.ColumnFamilyDescriptor; +import org.rocksdb.ColumnFamilyHandle; +import org.rocksdb.ColumnFamilyOptions; +import org.rocksdb.DBOptions; +import org.rocksdb.ReadOptions; +import org.rocksdb.RocksDB; + +import javax.annotation.Nonnull; + +import java.nio.file.Path; +import java.util.ArrayList; +import java.util.List; +import java.util.function.Function; + +/** Utility classes for RocksDB restore operations. */ +public class RocksDBRestoreOperationUtils { + + /** + * Restores a RocksDB instance from local state for the given state handle. + * + * @param stateHandle the state handle to restore from + * @param columnFamilyOptionsFactory factory for creating column family options + * @param dbOptions database options + * @param ttlCompactFiltersManager TTL compact filters manager (can be null) + * @param writeBufferManagerCapacity write buffer manager capacity (can be null) + * @return restored DB instance with all necessary handles and metadata + * @throws Exception on any restore error + */ + public static RestoredDBInstance restoreTempDBInstanceFromLocalState( + IncrementalLocalKeyedStateHandle stateHandle, + List<StateMetaInfoSnapshot> stateMetaInfoSnapshots, + Function<String, ColumnFamilyOptions> columnFamilyOptionsFactory, + DBOptions dbOptions, + RocksDbTtlCompactFiltersManager ttlCompactFiltersManager, + Long writeBufferManagerCapacity) + throws Exception { + + List<ColumnFamilyDescriptor> columnFamilyDescriptors = + createColumnFamilyDescriptors( + stateMetaInfoSnapshots, + columnFamilyOptionsFactory, + ttlCompactFiltersManager, + writeBufferManagerCapacity, + true); + + Path restoreSourcePath = stateHandle.getDirectoryStateHandle().getDirectory(); + + List<ColumnFamilyHandle> columnFamilyHandles = + new ArrayList<>(stateMetaInfoSnapshots.size() + 1); + + for (ColumnFamilyDescriptor columnFamilyDescriptor : columnFamilyDescriptors) { + columnFamilyDescriptor.getOptions().setDisableAutoCompactions(true); Review Comment: Thanks! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
