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https://issues.apache.org/jira/browse/GOBBLIN-1162?focusedWorklogId=438938&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-438938
]
ASF GitHub Bot logged work on GOBBLIN-1162:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 29/May/20 20:53
Start Date: 29/May/20 20:53
Worklog Time Spent: 10m
Work Description: sv2000 commented on a change in pull request #3002:
URL: https://github.com/apache/incubator-gobblin/pull/3002#discussion_r432729668
##########
File path:
gobblin-modules/gobblin-kafka-common/src/main/java/org/apache/gobblin/source/extractor/extract/kafka/KafkaIngestionHealthCheck.java
##########
@@ -0,0 +1,164 @@
+/*
+ * 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.gobblin.source.extractor.extract.kafka;
+
+import java.io.IOException;
+import java.util.concurrent.TimeUnit;
+
+import com.google.common.collect.EvictingQueue;
+import com.google.common.eventbus.EventBus;
+import com.typesafe.config.Config;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.apache.gobblin.annotation.Alias;
+import org.apache.gobblin.broker.SharedResourcesBrokerFactory;
+import org.apache.gobblin.commit.CommitStep;
+import org.apache.gobblin.util.ConfigUtils;
+import org.apache.gobblin.util.event.ContainerHealthCheckFailureEvent;
+import org.apache.gobblin.util.eventbus.EventBusFactory;
+
+
+@Slf4j
+@Alias(value = "KafkaIngestionHealthCheck")
+public class KafkaIngestionHealthCheck implements CommitStep {
+ public static final String KAFKA_INGESTION_HEALTH_CHECK_PREFIX =
"gobblin.kafka.healthCheck.";
+ public static final String
KAFKA_INGESTION_HEALTH_CHECK_SLIDING_WINDOW_SIZE_KEY =
KAFKA_INGESTION_HEALTH_CHECK_PREFIX + "slidingWindow.size";
+ public static final String
KAFKA_INGESTION_HEALTH_CHECK_LATENCY_THRESHOLD_MINUTES_KEY =
KAFKA_INGESTION_HEALTH_CHECK_PREFIX + "ingestionLatency.minutes";
+ public static final String
KAFKA_INGESTION_HEALTH_CHECK_CONSUMPTION_RATE_DROPOFF_FRACTION_KEY =
KAFKA_INGESTION_HEALTH_CHECK_PREFIX + "consumptionRate.dropOffFraction";
+ public static final String
KAFKA_INGESTION_HEALTH_CHECK_EXPECTED_CONSUMPTION_RATE_MBPS_KEY =
KAFKA_INGESTION_HEALTH_CHECK_PREFIX + "expected.consumptionRateMbps";
+
+ public static final int
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_SLIDING_WINDOW_SIZE = 3;
+ public static final long
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_LATENCY_THRESHOLD_MINUTES= 15;
+ public static final double
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_CONSUMPTION_RATE_DROPOFF_FRACTION = 0.7;
+ public static final double
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_EXPECTED_CONSUMPTION_RATE_MBPS = 10.0;
+
+ private final Config config;
+ private final EventBus eventBus;
+ private final KafkaExtractorStatsTracker statsTracker;
+ private final double expectedConsumptionRate;
+ private final double consumptionRateDropOffFraction;
+ private final long ingestionLatencyThresholdMinutes;
+ private final int slidingWindowSize;
+ private final EvictingQueue<Long> ingestionLatencies;
+ private final EvictingQueue<Double> consumptionRateMBps;
+
+ public KafkaIngestionHealthCheck(Config config, KafkaExtractorStatsTracker
statsTracker) {
+ this.config = config;
+ this.slidingWindowSize = ConfigUtils.getInt(config,
KAFKA_INGESTION_HEALTH_CHECK_SLIDING_WINDOW_SIZE_KEY,
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_SLIDING_WINDOW_SIZE);
+ this.ingestionLatencyThresholdMinutes = ConfigUtils.getLong(config,
KAFKA_INGESTION_HEALTH_CHECK_LATENCY_THRESHOLD_MINUTES_KEY,
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_LATENCY_THRESHOLD_MINUTES);
+ this.consumptionRateDropOffFraction = ConfigUtils.getDouble(config,
KAFKA_INGESTION_HEALTH_CHECK_CONSUMPTION_RATE_DROPOFF_FRACTION_KEY,
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_CONSUMPTION_RATE_DROPOFF_FRACTION);
+ this.expectedConsumptionRate = ConfigUtils.getDouble(config,
KAFKA_INGESTION_HEALTH_CHECK_EXPECTED_CONSUMPTION_RATE_MBPS_KEY,
DEFAULT_KAFKA_INGESTION_HEALTH_CHECK_EXPECTED_CONSUMPTION_RATE_MBPS);
+ this.ingestionLatencies = EvictingQueue.create(this.slidingWindowSize);
+ this.consumptionRateMBps = EvictingQueue.create(this.slidingWindowSize);
+ EventBus eventBus;
+ try {
+ eventBus =
EventBusFactory.get(ContainerHealthCheckFailureEvent.CONTAINER_HEALTH_CHECK_EVENT_BUS_NAME,
+ SharedResourcesBrokerFactory.getImplicitBroker());
+ } catch (IOException e) {
+ log.error("Could not find EventBus instance for container health check",
e);
+ eventBus = null;
+ }
+ this.eventBus = eventBus;
+ this.statsTracker = statsTracker;
+ }
+
+ /**
+ *
+ * @return true if ingestionLatency in the each of the recent epochs exceeds
the threshold latency and the latency
+ * is increasing over these epochs.
+ */
+ private boolean checkIngestionLatency() {
+ Long previousLatency = -1L;
+ for (Long ingestionLatency: ingestionLatencies) {
+ if (ingestionLatency < this.ingestionLatencyThresholdMinutes ||
previousLatency > ingestionLatency) {
+ return false;
+ } else {
+ previousLatency = ingestionLatency;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Determine whether the commit step has been completed.
+ */
+ @Override
+ public boolean isCompleted()
Review comment:
Set it to false both here and inside HelixParticipantCheck. In general,
the isCompleted() check is not useful for streaming use cases, where a
CommitStep is going to be called multiple times. Further, even for
non-streaming use cases, the isCompeted() check is useful only if there is a
side-effect due to a partial execution of a CommitStep (e.g. renaming a subset
of files from a file list).
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Issue Time Tracking
-------------------
Worklog Id: (was: 438938)
Time Spent: 40m (was: 0.5h)
> Provide an option to allow slow containers to commit suicide when unhealthy
> ---------------------------------------------------------------------------
>
> Key: GOBBLIN-1162
> URL: https://issues.apache.org/jira/browse/GOBBLIN-1162
> Project: Apache Gobblin
> Issue Type: Improvement
> Components: gobblin-cluster
> Affects Versions: 0.15.0
> Reporter: Sudarshan Vasudevan
> Assignee: Hung Tran
> Priority: Major
> Fix For: 0.15.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> In execution environments such as Gobblin-on-Yarn, where Gobblin workers can
> be re-assigned when the worker dies or is killed, it is useful to add a mode
> where each Gobblin task running inside a Gobblin worker can perform
> application-level health checks and report results of the health checks back
> to the worker hosting the tasks. The worker on receiving a health check
> failure event can be configured to exit the JVM. In the case of
> Gobblin-on-Yarn mode, this will result in the worker getting re-assigned to a
> different node. The proposed behavior is similar in flavor to speculative
> execution modes provided in other execution frameworks such as MapReduce.
> This change also provides an example of such an application-level health
> check that arises in the case of Kafka ingestion.
>
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