| /* |
| * 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.asterix.common.dataflow; |
| |
| import java.util.List; |
| |
| import org.apache.asterix.common.ioopcallbacks.LSMIOOperationCallback; |
| import org.apache.asterix.common.transactions.ILogManager; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.storage.am.lsm.common.api.ILSMIOOperation; |
| import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndex; |
| |
| public class LSMIndexUtil { |
| |
| private LSMIndexUtil() { |
| } |
| |
| public static void checkAndSetFirstLSN(AbstractLSMIndex lsmIndex, ILogManager logManager) |
| throws HyracksDataException { |
| // If the index has an empty memory component, we need to set its first LSN (For soft checkpoint) |
| if (lsmIndex.isCurrentMutableComponentEmpty()) { |
| //prevent transactions from incorrectly setting the first LSN on a modified component by checking the index is still empty |
| synchronized (lsmIndex.getOperationTracker()) { |
| if (lsmIndex.isCurrentMutableComponentEmpty()) { |
| LSMIOOperationCallback ioOpCallback = (LSMIOOperationCallback) lsmIndex.getIOOperationCallback(); |
| ioOpCallback.setFirstLsnForCurrentMemoryComponent(logManager.getAppendLSN()); |
| } |
| } |
| } |
| } |
| |
| public static void waitFor(List<? extends ILSMIOOperation> ioOperations) throws HyracksDataException { |
| for (int i = 0; i < ioOperations.size(); i++) { |
| try { |
| ioOperations.get(i).sync(); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw HyracksDataException.create(e); |
| } |
| } |
| } |
| } |