| /** |
| * |
| * 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.wal; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hbase.CompatibilitySingletonFactory; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.wal.WALEdit; |
| import org.apache.hadoop.hbase.wal.WALKey; |
| import org.apache.hadoop.util.StringUtils; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Class used to push numbers about the WAL into the metrics subsystem. This will take a |
| * single function call and turn it into multiple manipulations of the hadoop metrics system. |
| */ |
| @InterfaceAudience.Private |
| public class MetricsWAL implements WALActionsListener { |
| private static final Logger LOG = LoggerFactory.getLogger(MetricsWAL.class); |
| |
| private final MetricsWALSource source; |
| |
| public MetricsWAL() { |
| this(CompatibilitySingletonFactory.getInstance(MetricsWALSource.class)); |
| } |
| |
| MetricsWAL(MetricsWALSource s) { |
| this.source = s; |
| } |
| |
| @Override |
| public void postSync(final long timeInNanos, final int handlerSyncs) { |
| source.incrementSyncTime(timeInNanos/1000000L); |
| } |
| |
| @Override |
| public void postAppend(final long size, final long time, final WALKey logkey, |
| final WALEdit logEdit) throws IOException { |
| TableName tableName = logkey.getTableName(); |
| source.incrementAppendCount(tableName); |
| source.incrementAppendTime(time); |
| source.incrementAppendSize(tableName, size); |
| source.incrementWrittenBytes(size); |
| |
| if (time > 1000) { |
| source.incrementSlowAppendCount(); |
| LOG.warn(String.format("%s took %d ms appending an edit to wal; len~=%s", |
| Thread.currentThread().getName(), |
| time, |
| StringUtils.humanReadableInt(size))); |
| } |
| } |
| |
| @Override |
| public void logRollRequested(WALActionsListener.RollRequestReason reason) { |
| source.incrementLogRollRequested(); |
| switch (reason) { |
| case ERROR: |
| source.incrementErrorLogRoll(); |
| break; |
| case LOW_REPLICATION: |
| source.incrementLowReplicationLogRoll(); |
| break; |
| case SIZE: |
| source.incrementSizeLogRoll(); |
| break; |
| case SLOW_SYNC: |
| source.incrementSlowSyncLogRoll(); |
| break; |
| default: |
| break; |
| } |
| } |
| } |