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Main functionality for HBase
/**
* 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.replication.regionserver;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
/**
* This class is for maintaining the various replication statistics for a source and publishing them
* through the metrics interfaces.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.REPLICATION)
public class MetricsSource {
private static final Log LOG = LogFactory.getLog(MetricsSource.class);
// tracks last shipped timestamp for each wal group
private Map lastTimeStamps = new HashMap();
private long lastHFileRefsQueueSize = 0;
private String id;
private final MetricsReplicationSourceSource singleSourceSource;
private final MetricsReplicationSourceSource globalSourceSource;
/**
* Constructor used to register the metrics
*
* @param id Name of the source this class is monitoring
*/
public MetricsSource(String id) {
this.id = id;
singleSourceSource =
CompatibilitySingletonFactory.getInstance(MetricsReplicationSourceFactory.class)
.getSource(id);
globalSourceSource = CompatibilitySingletonFactory.getInstance(MetricsReplicationSourceFactory.class).getGlobalSource();
}
/**
* Set the age of the last edit that was shipped
* @param timestamp write time of the edit
* @param walGroup which group we are setting
*/
public void setAgeOfLastShippedOp(long timestamp, String walGroup) {
long age = EnvironmentEdgeManager.currentTime() - timestamp;
singleSourceSource.setLastShippedAge(age);
globalSourceSource.setLastShippedAge(Math.max(age, globalSourceSource.getLastShippedAge()));
this.lastTimeStamps.put(walGroup, timestamp);
}
/**
* Convenience method to use the last given timestamp to refresh the age of the last edit. Used
* when replication fails and need to keep that metric accurate.
* @param walGroupId id of the group to update
*/
public void refreshAgeOfLastShippedOp(String walGroupId) {
Long lastTimestamp = this.lastTimeStamps.get(walGroupId);
if (lastTimestamp == null) {
this.lastTimeStamps.put(walGroupId, 0L);
lastTimestamp = 0L;
}
if (lastTimestamp > 0) {
setAgeOfLastShippedOp(lastTimestamp, walGroupId);
}
}
/**
* Increment size of the log queue.
*/
public void incrSizeOfLogQueue() {
singleSourceSource.incrSizeOfLogQueue(1);
globalSourceSource.incrSizeOfLogQueue(1);
}
public void decrSizeOfLogQueue() {
singleSourceSource.decrSizeOfLogQueue(1);
globalSourceSource.decrSizeOfLogQueue(1);
}
/**
* Add on the the number of log edits read
*
* @param delta the number of log edits read.
*/
private void incrLogEditsRead(long delta) {
singleSourceSource.incrLogReadInEdits(delta);
globalSourceSource.incrLogReadInEdits(delta);
}
/** Increment the number of log edits read by one. */
public void incrLogEditsRead() {
incrLogEditsRead(1);
}
/**
* Add on the number of log edits filtered
*
* @param delta the number filtered.
*/
public void incrLogEditsFiltered(long delta) {
singleSourceSource.incrLogEditsFiltered(delta);
globalSourceSource.incrLogEditsFiltered(delta);
}
/** The number of log edits filtered out. */
public void incrLogEditsFiltered() {
incrLogEditsFiltered(1);
}
/**
* Convience method to apply changes to metrics do to shipping a batch of logs.
*
* @param batchSize the size of the batch that was shipped to sinks.
*/
public void shipBatch(long batchSize, int sizeInBytes) {
singleSourceSource.incrBatchesShipped(1);
globalSourceSource.incrBatchesShipped(1);
singleSourceSource.incrOpsShipped(batchSize);
globalSourceSource.incrOpsShipped(batchSize);
singleSourceSource.incrShippedBytes(sizeInBytes);
globalSourceSource.incrShippedBytes(sizeInBytes);
}
/**
* Convience method to apply changes to metrics do to shipping a batch of logs.
*
* @param batchSize the size of the batch that was shipped to sinks.
* @param hfiles total number of hfiles shipped to sinks.
*/
public void shipBatch(long batchSize, int sizeInBytes, long hfiles) {
shipBatch(batchSize, sizeInBytes);
singleSourceSource.incrHFilesShipped(hfiles);
globalSourceSource.incrHFilesShipped(hfiles);
}
/** increase the byte number read by source from log file */
public void incrLogReadInBytes(long readInBytes) {
singleSourceSource.incrLogReadInBytes(readInBytes);
globalSourceSource.incrLogReadInBytes(readInBytes);
}
/** Removes all metrics about this Source. */
public void clear() {
int lastQueueSize = singleSourceSource.getSizeOfLogQueue();
globalSourceSource.decrSizeOfLogQueue(lastQueueSize);
singleSourceSource.decrSizeOfLogQueue(lastQueueSize);
singleSourceSource.clear();
globalSourceSource.decrSizeOfHFileRefsQueue(lastHFileRefsQueueSize);
lastTimeStamps.clear();
lastHFileRefsQueueSize = 0;
}
/**
* Get AgeOfLastShippedOp
* @return AgeOfLastShippedOp
*/
public Long getAgeOfLastShippedOp() {
return singleSourceSource.getLastShippedAge();
}
/**
* Get the sizeOfLogQueue
* @return sizeOfLogQueue
*/
public int getSizeOfLogQueue() {
return singleSourceSource.getSizeOfLogQueue();
}
/**
* Get the timeStampsOfLastShippedOp, if there are multiple groups, return the latest one
* @return lastTimestampForAge
*/
public long getTimeStampOfLastShippedOp() {
long lastTimestamp = 0L;
for (long ts : lastTimeStamps.values()) {
if (ts > lastTimestamp) {
lastTimestamp = ts;
}
}
return lastTimestamp;
}
/**
* Get the slave peer ID
* @return peerID
*/
public String getPeerID() {
return id;
}
public void incrSizeOfHFileRefsQueue(long size) {
singleSourceSource.incrSizeOfHFileRefsQueue(size);
globalSourceSource.incrSizeOfHFileRefsQueue(size);
lastHFileRefsQueueSize = size;
}
public void decrSizeOfHFileRefsQueue(int size) {
singleSourceSource.decrSizeOfHFileRefsQueue(size);
globalSourceSource.decrSizeOfHFileRefsQueue(size);
lastHFileRefsQueueSize -= size;
if (lastHFileRefsQueueSize < 0) {
lastHFileRefsQueueSize = 0;
}
}
public void incrUnknownFileLengthForClosedWAL() {
singleSourceSource.incrUnknownFileLengthForClosedWAL();
globalSourceSource.incrUnknownFileLengthForClosedWAL();
}
public void incrUncleanlyClosedWALs() {
singleSourceSource.incrUncleanlyClosedWALs();
globalSourceSource.incrUncleanlyClosedWALs();
}
public void incrBytesSkippedInUncleanlyClosedWALs(final long bytes) {
singleSourceSource.incrBytesSkippedInUncleanlyClosedWALs(bytes);
globalSourceSource.incrBytesSkippedInUncleanlyClosedWALs(bytes);
}
public void incrRestartedWALReading() {
singleSourceSource.incrRestartedWALReading();
globalSourceSource.incrRestartedWALReading();
}
public void incrRepeatedFileBytes(final long bytes) {
singleSourceSource.incrRepeatedFileBytes(bytes);
globalSourceSource.incrRepeatedFileBytes(bytes);
}
public void incrCompletedWAL() {
singleSourceSource.incrCompletedWAL();
globalSourceSource.incrCompletedWAL();
}
public void incrCompletedRecoveryQueue() {
singleSourceSource.incrCompletedRecoveryQueue();
globalSourceSource.incrCompletedRecoveryQueue();
}
}