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https://issues.apache.org/jira/browse/HIVE-23516?focusedWorklogId=442293&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-442293
]
ASF GitHub Bot logged work on HIVE-23516:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Jun/20 17:06
Start Date: 06/Jun/20 17:06
Worklog Time Spent: 10m
Work Description: aasha commented on a change in pull request #1044:
URL: https://github.com/apache/hive/pull/1044#discussion_r436284316
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/parse/repl/metric/MetricSink.java
##########
@@ -0,0 +1,116 @@
+/*
+ * 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.hive.ql.parse.repl.metric;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.hadoop.hive.conf.HiveConf;
+import org.apache.hadoop.hive.metastore.api.ReplicationMetricList;
+import org.apache.hadoop.hive.metastore.api.ReplicationMetrics;
+import org.apache.hadoop.hive.metastore.conf.MetastoreConf;
+import org.apache.hadoop.hive.metastore.utils.Retry;
+import org.apache.hadoop.hive.ql.metadata.Hive;
+import org.apache.hadoop.hive.ql.parse.repl.metric.event.ReplicationMetric;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * MetricSink.
+ * Scheduled thread to poll from Metric Collector and persists to DB
+ */
+public final class MetricSink {
+ private static final Logger LOG = LoggerFactory.getLogger(MetricSink.class);
+ private ScheduledExecutorService executorService;
+ private static volatile MetricSink instance;
+ private boolean isInitialised = false;
+ private HiveConf conf;
+
+ private MetricSink() {
+ this.executorService = Executors.newSingleThreadScheduledExecutor();
+ }
+
+ public static MetricSink getInstance() {
+ if (instance == null) {
+ synchronized (MetricSink.class) {
+ if (instance == null) {
+ instance = new MetricSink();
+ }
+ }
+ }
+ return instance;
+ }
+
+ public synchronized void init(HiveConf conf) {
+ if (!isInitialised) {
+ this.conf = conf;
+ long frequencyInMins = MetastoreConf.getLongVar(conf,
MetastoreConf.ConfVars.REPL_METRICS_UPDATE_FREQUENCY);
+ this.executorService.schedule(new MetricSinkWriter(conf),
frequencyInMins, TimeUnit.MINUTES);
+ isInitialised = true;
+ }
+ }
+
+ static class MetricSinkWriter implements Runnable {
+ private MetricCollector collector;
+ private HiveConf conf;
+
+ // writer instance
+
+ MetricSinkWriter(HiveConf conf) {
+ this.collector = MetricCollector.getInstance();
+ this.conf = conf;
+ }
+
+ @Override
+ public void run() {
+ // get metrics
+ List<ReplicationMetric> metrics = collector.getMetrics();
+ // write metrics and retry if fails
+ Retry<Void> retriable = new Retry<Void>(Exception.class) {
+ @Override
+ public Void execute() throws Exception {
+ ReplicationMetricList metricList = new ReplicationMetricList();
+ List<ReplicationMetrics> replicationMetricsList = new ArrayList<>();
+ for (ReplicationMetric metric : metrics) {
+ ReplicationMetrics persistentMetric = new ReplicationMetrics();
+ persistentMetric.setDumpExecutionId(metric.getDumpExecutionId());
+
persistentMetric.setScheduledExecutionId(metric.getScheduledExecutionId());
+ persistentMetric.setPolicy(metric.getPolicy());
+ ObjectMapper mapper = new ObjectMapper();
+
persistentMetric.setProgress(mapper.writeValueAsString(metric.getProgress()));
+
persistentMetric.setMetadata(mapper.writeValueAsString(metric.getMetadata()));
+ replicationMetricsList.add(persistentMetric);
+ }
+ metricList.setReplicationMetricList(replicationMetricsList);
Review comment:
This is just an assignment. Where is the 2X memory coming from? The list
in metricList is not allocated any extra memory apart from the list size.
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Issue Time Tracking
-------------------
Worklog Id: (was: 442293)
Time Spent: 5h 50m (was: 5h 40m)
> Store hive replication policy execution metrics in the relational DB
> --------------------------------------------------------------------
>
> Key: HIVE-23516
> URL: https://issues.apache.org/jira/browse/HIVE-23516
> Project: Hive
> Issue Type: Task
> Reporter: Aasha Medhi
> Assignee: Aasha Medhi
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-23516.01.patch, HIVE-23516.02.patch,
> HIVE-23516.03.patch, HIVE-23516.04.patch, HIVE-23516.05.patch,
> HIVE-23516.06.patch, HIVE-23516.07.patch, HIVE-23516.08.patch,
> HIVE-23516.09.patch, HIVE-23516.10.patch, HIVE-23516.11.patch,
> HIVE-23516.12.patch, HIVE-23516.13.patch, HIVE-23516.14.patch,
> HIVE-23516.15.patch, Replication Metrics.pdf
>
> Time Spent: 5h 50m
> Remaining Estimate: 0h
>
> Details documented in the attached doc
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