forked from apache/druid
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add ingest/input/bytes metric and Kafka consumer metrics. (apache#14582)
* Add ingest/input/bytes metric and Kafka consumer metrics. New metrics: 1) ingest/input/bytes. Equivalent to processedBytes in the task reports. 2) kafka/consumer/bytesConsumed: Equivalent to the Kafka consumer metric "bytes-consumed-total". Only emitted for Kafka tasks. 3) kafka/consumer/recordsConsumed: Equivalent to the Kafka consumer metric "records-consumed-total". Only emitted for Kafka tasks. * Fix anchor. * Fix KafkaConsumerMonitor. * Interface updates. * Doc changes. * Update indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/SeekableStreamIndexTask.java Co-authored-by: Benedict Jin <[email protected]> --------- Co-authored-by: Benedict Jin <[email protected]>
- Loading branch information
Showing
14 changed files
with
270 additions
and
102 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
94 changes: 94 additions & 0 deletions
94
...-indexing-service/src/main/java/org/apache/druid/indexing/kafka/KafkaConsumerMonitor.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| * 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.druid.indexing.kafka; | ||
|
|
||
| import com.google.common.base.Strings; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import org.apache.druid.java.util.emitter.service.ServiceEmitter; | ||
| import org.apache.druid.java.util.emitter.service.ServiceMetricEvent; | ||
| import org.apache.druid.java.util.metrics.AbstractMonitor; | ||
| import org.apache.kafka.clients.consumer.KafkaConsumer; | ||
| import org.apache.kafka.common.Metric; | ||
| import org.apache.kafka.common.MetricName; | ||
|
|
||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.concurrent.atomic.AtomicLong; | ||
|
|
||
| public class KafkaConsumerMonitor extends AbstractMonitor | ||
| { | ||
| private volatile boolean stopAfterNext = false; | ||
|
|
||
| // Kafka metric name -> Druid metric name | ||
| private static final Map<String, String> METRICS = | ||
| ImmutableMap.<String, String>builder() | ||
| .put("bytes-consumed-total", "kafka/consumer/bytesConsumed") | ||
| .put("records-consumed-total", "kafka/consumer/recordsConsumed") | ||
| .build(); | ||
| private static final String TOPIC_TAG = "topic"; | ||
| private static final Set<String> TOPIC_METRIC_TAGS = ImmutableSet.of("client-id", TOPIC_TAG); | ||
|
|
||
| private final KafkaConsumer<?, ?> consumer; | ||
| private final Map<String, AtomicLong> counters = new HashMap<>(); | ||
|
|
||
| public KafkaConsumerMonitor(final KafkaConsumer<?, ?> consumer) | ||
| { | ||
| this.consumer = consumer; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean doMonitor(final ServiceEmitter emitter) | ||
| { | ||
| for (final Map.Entry<MetricName, ? extends Metric> entry : consumer.metrics().entrySet()) { | ||
| final MetricName metricName = entry.getKey(); | ||
|
|
||
| if (METRICS.containsKey(metricName.name()) && isTopicMetric(metricName)) { | ||
| final String topic = metricName.tags().get(TOPIC_TAG); | ||
| final long newValue = ((Number) entry.getValue().metricValue()).longValue(); | ||
| final long priorValue = | ||
| counters.computeIfAbsent(metricName.name(), ignored -> new AtomicLong()) | ||
| .getAndSet(newValue); | ||
|
|
||
| if (newValue != priorValue) { | ||
| final ServiceMetricEvent.Builder builder = | ||
| new ServiceMetricEvent.Builder().setDimension(TOPIC_TAG, topic); | ||
| emitter.emit(builder.build(METRICS.get(metricName.name()), newValue - priorValue)); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return !stopAfterNext; | ||
| } | ||
|
|
||
| public void stopAfterNextEmit() | ||
| { | ||
| stopAfterNext = true; | ||
| } | ||
|
|
||
| private static boolean isTopicMetric(final MetricName metricName) | ||
| { | ||
| // Certain metrics are emitted both as grand totals and broken down by topic; we want to ignore the grand total and | ||
| // only look at the per-topic metrics. See https://kafka.apache.org/documentation/#consumer_fetch_monitoring. | ||
| return TOPIC_METRIC_TAGS.equals(metricName.tags().keySet()) | ||
| && !Strings.isNullOrEmpty(metricName.tags().get(TOPIC_TAG)); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.