| /* |
| * |
| * 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.hadoop.hbase.regionserver; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.hadoop.hbase.wal.AbstractWALRoller; |
| import org.apache.hadoop.hbase.wal.WAL; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Runs periodically to determine if the WAL should be rolled. |
| * |
| * NOTE: This class extends Thread rather than Chore because the sleep time |
| * can be interrupted when there is something to do, rather than the Chore |
| * sleep time which is invariant. |
| * |
| * TODO: change to a pool of threads |
| */ |
| @InterfaceAudience.Private |
| public class LogRoller extends AbstractWALRoller<RegionServerServices> { |
| private static final Logger LOG = LoggerFactory.getLogger(LogRoller.class); |
| |
| public LogRoller(RegionServerServices services) { |
| super("LogRoller", services.getConfiguration(), services); |
| } |
| |
| protected void scheduleFlush(String encodedRegionName, List<byte[]> families) { |
| RegionServerServices services = this.abortable; |
| HRegion r = (HRegion) services.getRegion(encodedRegionName); |
| if (r == null) { |
| LOG.warn("Failed to schedule flush of {}, because it is not online on us", encodedRegionName); |
| return; |
| } |
| FlushRequester requester = services.getFlushRequester(); |
| if (requester == null) { |
| LOG.warn("Failed to schedule flush of {}, region={}, because FlushRequester is null", |
| encodedRegionName, r); |
| return; |
| } |
| // flush specified stores to clean old logs |
| requester.requestFlush(r, families, FlushLifeCycleTracker.DUMMY); |
| } |
| |
| Map<WAL, RollController> getWalNeedsRoll() { |
| return this.wals; |
| } |
| } |