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https://issues.apache.org/jira/browse/HIVE-21846?focusedWorklogId=265787&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-265787
]
ASF GitHub Bot logged work on HIVE-21846:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Jun/19 16:17
Start Date: 24/Jun/19 16:17
Worklog Time Spent: 10m
Work Description: odraese commented on pull request #683: HIVE-21846:
Create a thread in TezAM which periodically fetches LlapDaemon metrics
URL: https://github.com/apache/hive/pull/683#discussion_r296799724
##########
File path:
llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/metrics/LlapMetricsCollector.java
##########
@@ -0,0 +1,194 @@
+/*
+ * Licensed 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.hive.llap.tezplugins.metrics;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import com.google.protobuf.ServiceException;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hive.conf.HiveConf;
+import org.apache.hadoop.hive.llap.daemon.rpc.LlapDaemonProtocolProtos;
+import org.apache.hadoop.hive.llap.impl.LlapManagementProtocolClientImpl;
+import org.apache.hadoop.hive.llap.registry.LlapServiceInstance;
+import org.apache.hadoop.hive.registry.ServiceInstanceStateChangeListener;
+import org.apache.hadoop.io.retry.RetryPolicies;
+import org.apache.hadoop.io.retry.RetryPolicy;
+import org.apache.hadoop.net.NetUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.net.SocketFactory;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Collect metrics from the llap daemons in every given milliseconds.
+ */
+public class LlapMetricsCollector implements
ServiceInstanceStateChangeListener<LlapServiceInstance> {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(LlapMetricsCollector.class);
+ private static final String THREAD_NAME =
"LlapTaskSchedulerMetricsCollectorThread";
+ private static final long INITIAL_DELAY_MSEC = 60000L;
+
+ private final Configuration conf;
+ private final ScheduledExecutorService scheduledMetricsExecutor;
+ private final LlapManagementProtocolClientImplFactory clientFactory;
+ private final Map<String, LlapManagementProtocolClientImpl> llapClients;
+ private final Map<String, LlapMetrics> instanceStatisticsMap;
+ private final long metricsCollectionMs;
+
+
+ public LlapMetricsCollector(Configuration conf) {
+ this(
+ conf,
+ Executors.newSingleThreadScheduledExecutor(
+ new
ThreadFactoryBuilder().setDaemon(true).setNameFormat(THREAD_NAME)
+ .build()),
+ LlapManagementProtocolClientImplFactory.basicInstance(conf));
+ }
+
+ @VisibleForTesting
+ LlapMetricsCollector(Configuration conf, ScheduledExecutorService
scheduledMetricsExecutor,
+ LlapManagementProtocolClientImplFactory clientFactory) {
+ this.conf = conf;
+ this.scheduledMetricsExecutor = scheduledMetricsExecutor;
+ this.clientFactory = clientFactory;
+ this.llapClients = new HashMap<>();
+ this.instanceStatisticsMap = new ConcurrentHashMap<>();
+ this.metricsCollectionMs = HiveConf.getTimeVar(conf,
+
HiveConf.ConfVars.LLAP_TASK_SCHEDULER_AM_COLLECT_DAEMON_METRICS_MS,
TimeUnit.MILLISECONDS);
+ }
+
+ public void start() {
+ if (enabled()) {
+ scheduledMetricsExecutor.scheduleAtFixedRate(() -> {
+ collectMetrics();
+ }, INITIAL_DELAY_MSEC, metricsCollectionMs, TimeUnit.MILLISECONDS);
+ }
+ }
+
+ private boolean enabled() {
+ return metricsCollectionMs > 0;
+ }
+
+ public void shutdown() {
+ scheduledMetricsExecutor.shutdownNow();
+ }
+
+ @VisibleForTesting
+ void collectMetrics() {
+ if (enabled()) {
Review comment:
Unnecessary check: The thread, calling collectMetrics is never created if ms
<= 0.
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Issue Time Tracking
-------------------
Worklog Id: (was: 265787)
Time Spent: 0.5h (was: 20m)
> Create a thread in TezAM which periodically fetches LlapDaemon metrics
> ----------------------------------------------------------------------
>
> Key: HIVE-21846
> URL: https://issues.apache.org/jira/browse/HIVE-21846
> Project: Hive
> Issue Type: Sub-task
> Components: llap, Tez
> Reporter: Peter Vary
> Assignee: Antal Sinkovits
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21846.01.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> LlapTaskSchedulerService should start a thread which periodically fetches the
> LlapDaemon metrics and stores them in the NodeInfo object.
> This should be just the first implementation - later we should find a way
> where we do not need NxM requests between N TezAM and M LlapDaemon
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