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/*
* 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.runtime.rest.handler.job.checkpoints;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.checkpoint.AbstractCheckpointStats;
import org.apache.flink.runtime.checkpoint.CheckpointStatsHistory;
import org.apache.flink.runtime.checkpoint.CheckpointStatsSnapshot;
import org.apache.flink.runtime.checkpoint.MinMaxAvgStats;
import org.apache.flink.runtime.checkpoint.SubtaskStateStats;
import org.apache.flink.runtime.checkpoint.TaskStateStats;
import org.apache.flink.runtime.executiongraph.AccessExecutionGraph;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.runtime.rest.NotFoundException;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.handler.legacy.ExecutionGraphCache;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.JobIDPathParameter;
import org.apache.flink.runtime.rest.messages.JobVertexIdPathParameter;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.rest.messages.ResponseBody;
import org.apache.flink.runtime.rest.messages.checkpoints.CheckpointIdPathParameter;
import org.apache.flink.runtime.rest.messages.checkpoints.MinMaxAvgStatistics;
import org.apache.flink.runtime.rest.messages.checkpoints.SubtaskCheckpointStatistics;
import org.apache.flink.runtime.rest.messages.checkpoints.TaskCheckpointMessageParameters;
import org.apache.flink.runtime.rest.messages.checkpoints.TaskCheckpointStatisticsWithSubtaskDetails;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.history.ArchivedJson;
import org.apache.flink.runtime.webmonitor.history.JsonArchivist;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
/**
* REST handler which serves checkpoint statistics for subtasks.
*/
public class TaskCheckpointStatisticDetailsHandler
extends AbstractCheckpointHandler
implements JsonArchivist {
public TaskCheckpointStatisticDetailsHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MessageHeaders messageHeaders,
ExecutionGraphCache executionGraphCache,
Executor executor,
CheckpointStatsCache checkpointStatsCache) {
super(
leaderRetriever,
timeout,
responseHeaders,
messageHeaders,
executionGraphCache,
executor,
checkpointStatsCache);
}
@Override
protected TaskCheckpointStatisticsWithSubtaskDetails handleCheckpointRequest(
HandlerRequest request,
AbstractCheckpointStats checkpointStats) throws RestHandlerException {
final JobVertexID jobVertexId = request.getPathParameter(JobVertexIdPathParameter.class);
final TaskStateStats taskStatistics = checkpointStats.getTaskStateStats(jobVertexId);
if (taskStatistics == null) {
throw new NotFoundException("There is no checkpoint statistics for task " + jobVertexId + '.');
}
return createCheckpointDetails(checkpointStats, taskStatistics);
}
@Override
public Collection archiveJsonWithPath(AccessExecutionGraph graph) throws IOException {
CheckpointStatsSnapshot stats = graph.getCheckpointStatsSnapshot();
if (stats == null) {
return Collections.emptyList();
}
CheckpointStatsHistory history = stats.getHistory();
List archive = new ArrayList<>(history.getCheckpoints().size());
for (AbstractCheckpointStats checkpoint : history.getCheckpoints()) {
for (TaskStateStats subtaskStats : checkpoint.getAllTaskStateStats()) {
ResponseBody json = createCheckpointDetails(checkpoint, subtaskStats);
String path = getMessageHeaders().getTargetRestEndpointURL()
.replace(':' + JobIDPathParameter.KEY, graph.getJobID().toString())
.replace(':' + CheckpointIdPathParameter.KEY, String.valueOf(checkpoint.getCheckpointId()))
.replace(':' + JobVertexIdPathParameter.KEY, subtaskStats.getJobVertexId().toString());
archive.add(new ArchivedJson(path, json));
}
}
return archive;
}
private static TaskCheckpointStatisticsWithSubtaskDetails createCheckpointDetails(AbstractCheckpointStats checkpointStats, TaskStateStats taskStatistics) {
final TaskCheckpointStatisticsWithSubtaskDetails.Summary summary = createSummary(
taskStatistics.getSummaryStats(),
checkpointStats.getTriggerTimestamp());
final List subtaskCheckpointStatistics = createSubtaskCheckpointStatistics(
taskStatistics.getSubtaskStats(),
checkpointStats.getTriggerTimestamp());
return new TaskCheckpointStatisticsWithSubtaskDetails(
checkpointStats.getCheckpointId(),
checkpointStats.getStatus(),
taskStatistics.getLatestAckTimestamp(),
taskStatistics.getStateSize(),
taskStatistics.getEndToEndDuration(checkpointStats.getTriggerTimestamp()),
taskStatistics.getAlignmentBuffered(),
taskStatistics.getNumberOfSubtasks(),
taskStatistics.getNumberOfAcknowledgedSubtasks(),
summary,
subtaskCheckpointStatistics);
}
private static TaskCheckpointStatisticsWithSubtaskDetails.Summary createSummary(TaskStateStats.TaskStateStatsSummary taskStatisticsSummary, long triggerTimestamp) {
final MinMaxAvgStats stateSizeStats = taskStatisticsSummary.getStateSizeStats();
final MinMaxAvgStats ackTSStats = taskStatisticsSummary.getAckTimestampStats();
final MinMaxAvgStats syncDurationStats = taskStatisticsSummary.getSyncCheckpointDurationStats();
final MinMaxAvgStats asyncDurationStats = taskStatisticsSummary.getAsyncCheckpointDurationStats();
final TaskCheckpointStatisticsWithSubtaskDetails.CheckpointDuration checkpointDuration = new TaskCheckpointStatisticsWithSubtaskDetails.CheckpointDuration(
new MinMaxAvgStatistics(syncDurationStats.getMinimum(), syncDurationStats.getMaximum(), syncDurationStats.getAverage()),
new MinMaxAvgStatistics(asyncDurationStats.getMinimum(), asyncDurationStats.getMaximum(), asyncDurationStats.getAverage()));
final MinMaxAvgStats alignmentBufferedStats = taskStatisticsSummary.getAlignmentBufferedStats();
final MinMaxAvgStats alignmentDurationStats = taskStatisticsSummary.getAlignmentDurationStats();
final TaskCheckpointStatisticsWithSubtaskDetails.CheckpointAlignment checkpointAlignment = new TaskCheckpointStatisticsWithSubtaskDetails.CheckpointAlignment(
new MinMaxAvgStatistics(alignmentBufferedStats.getMinimum(), alignmentBufferedStats.getMaximum(), alignmentBufferedStats.getAverage()),
new MinMaxAvgStatistics(alignmentDurationStats.getMinimum(), alignmentDurationStats.getMaximum(), alignmentDurationStats.getAverage()));
return new TaskCheckpointStatisticsWithSubtaskDetails.Summary(
new MinMaxAvgStatistics(stateSizeStats.getMinimum(), stateSizeStats.getMaximum(), stateSizeStats.getAverage()),
new MinMaxAvgStatistics(
Math.max(0L, ackTSStats.getMinimum() - triggerTimestamp),
Math.max(0L, ackTSStats.getMaximum() - triggerTimestamp),
Math.max(0L, ackTSStats.getAverage() - triggerTimestamp)),
checkpointDuration,
checkpointAlignment);
}
private static List createSubtaskCheckpointStatistics(SubtaskStateStats[] subtaskStateStats, long triggerTimestamp) {
final List result = new ArrayList<>(subtaskStateStats.length);
for (int i = 0; i < subtaskStateStats.length; i++) {
final SubtaskStateStats subtask = subtaskStateStats[i];
if (subtask == null) {
result.add(new SubtaskCheckpointStatistics.PendingSubtaskCheckpointStatistics(i));
} else {
result.add(new SubtaskCheckpointStatistics.CompletedSubtaskCheckpointStatistics(
i,
subtask.getAckTimestamp(),
subtask.getEndToEndDuration(triggerTimestamp),
subtask.getStateSize(),
new SubtaskCheckpointStatistics.CompletedSubtaskCheckpointStatistics.CheckpointDuration(
subtask.getSyncCheckpointDuration(),
subtask.getAsyncCheckpointDuration()),
new SubtaskCheckpointStatistics.CompletedSubtaskCheckpointStatistics.CheckpointAlignment(
subtask.getAlignmentBuffered(),
subtask.getAlignmentDuration())
));
}
}
return result;
}
}
