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YARN-8549 Adding a NoOp timeline writer and reader plugin classes for ATSv2. Contributed by Prabha Manepalli.

This commit is contained in:
Vrushali C 2019-02-01 14:26:50 -08:00
parent 4123353151
commit 2c13513040
2 changed files with 168 additions and 0 deletions
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80
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/NoOpTimelineReaderImpl.java Normal file
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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.hadoop.yarn.server.timelineservice.storage;
import org.apache.hadoop.service.AbstractService;
import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineDataToRetrieve;
import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineEntityFilters;
import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
/**
* Stub based implementation for TimelineReader. This implementation will
* not provide a complete implementation of all the necessary features. This
* implementation is provided solely for basic testing purposes.
*/
public class NoOpTimelineReaderImpl extends AbstractService
implements TimelineReader {
private static final Logger LOG =
LoggerFactory.getLogger(NoOpTimelineReaderImpl.class);
public NoOpTimelineReaderImpl() {
super(NoOpTimelineReaderImpl.class.getName());
LOG.info("NoOpTimelineReader is configured. Response to all the read " +
"requests would be empty");
}
@Override
public TimelineEntity getEntity(TimelineReaderContext context,
TimelineDataToRetrieve dataToRetrieve) throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
"requests would be empty");
}
return new TimelineEntity();
}
@Override
public Set<TimelineEntity> getEntities(TimelineReaderContext context,
TimelineEntityFilters filters, TimelineDataToRetrieve dataToRetrieve)
throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
"requests would be empty");
}
return new HashSet<>();
}
@Override
public Set<String> getEntityTypes(TimelineReaderContext context)
throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineReader is configured. Response to all the read " +
"requests would be empty");
}
return new HashSet<>();
}
}

88
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/NoOpTimelineWriterImpl.java Normal file
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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.hadoop.yarn.server.timelineservice.storage;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.service.AbstractService;
import org.apache.hadoop.yarn.api.records.timelineservice.TimelineDomain;
import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntities;
import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
import org.apache.hadoop.yarn.api.records.timelineservice.TimelineWriteResponse;
import org.apache.hadoop.yarn.server.timelineservice.collector.TimelineCollectorContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
/**
* Stub based implementation for TimelineWriter. This implementation will
* not provide a complete implementation of all the necessary features. This
* implementation is provided solely for basic testing purposes.
*/
public class NoOpTimelineWriterImpl extends AbstractService implements
TimelineWriter{
private static final Logger LOG =
LoggerFactory.getLogger(NoOpTimelineWriterImpl.class);
public NoOpTimelineWriterImpl() {
super(NoOpTimelineWriterImpl.class.getName());
LOG.info("NoOpTimelineWriter is configured. All the writes to the backend" +
" are ignored");
}
@Override
public TimelineWriteResponse write(TimelineCollectorContext context,
TimelineEntities data,
UserGroupInformation callerUgi)
throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineWriter is configured. Not storing " +
"TimelineEntities.");
}
return new TimelineWriteResponse();
}
@Override
public TimelineWriteResponse write(TimelineCollectorContext context,
TimelineDomain domain) throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineWriter is configured. Not storing " +
"TimelineEntities.");
}
return new TimelineWriteResponse();
}
@Override
public TimelineWriteResponse aggregate(TimelineEntity data,
TimelineAggregationTrack track)
throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineWriter is configured. Not aggregating " +
"TimelineEntities.");
}
return new TimelineWriteResponse();
}
@Override
public void flush() throws IOException {
if(LOG.isDebugEnabled()){
LOG.debug("NoOpTimelineWriter is configured. Ignoring flush call");
}
}
}