[
https://issues.apache.org/jira/browse/HIVE-21884?focusedWorklogId=324724&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-324724
]
ASF GitHub Bot logged work on HIVE-21884:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Oct/19 23:46
Start Date: 07/Oct/19 23:46
Worklog Time Spent: 10m
Work Description: jcamachor commented on pull request #794: HIVE-21884
URL: https://github.com/apache/hive/pull/794#discussion_r332272923
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/schq/ScheduledQueryExecutionService.java
##########
@@ -0,0 +1,159 @@
+package org.apache.hadoop.hive.ql.schq;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.hadoop.hive.conf.HiveConf;
+import org.apache.hadoop.hive.metastore.api.QueryState;
+import org.apache.hadoop.hive.metastore.api.ScheduledQueryPollResponse;
+import org.apache.hadoop.hive.metastore.api.ScheduledQueryProgressInfo;
+import org.apache.hadoop.hive.ql.DriverFactory;
+import org.apache.hadoop.hive.ql.IDriver;
+import org.apache.hadoop.hive.ql.processors.CommandProcessorResponse;
+import org.apache.hadoop.hive.ql.session.SessionState;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+
+public class ScheduledQueryExecutionService implements Closeable {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(ScheduledQueryExecutionService.class);
+
+ private ScheduledQueryExecutionContext context;
+ private ScheduledQueryExecutor worker;
+
+ public static ScheduledQueryExecutionService
startScheduledQueryExecutorService(HiveConf conf) {
+ MetastoreBasedScheduledQueryService qService = new
MetastoreBasedScheduledQueryService(conf);
+ ExecutorService executor =
+ Executors.newCachedThreadPool(
+ new
ThreadFactoryBuilder().setDaemon(true).setNameFormat("Scheduled Query Thread
%d").build());
+ ScheduledQueryExecutionContext ctx = new
ScheduledQueryExecutionContext(executor, conf, qService);
+ return new ScheduledQueryExecutionService(ctx);
+ }
+
+ public ScheduledQueryExecutionService(ScheduledQueryExecutionContext ctx) {
+ context = ctx;
+ ctx.executor.submit(worker = new ScheduledQueryExecutor());
+ ctx.executor.submit(new ProgressReporter());
+ }
+
+ class ScheduledQueryExecutor implements Runnable {
+
+ private ScheduledQueryProgressInfo info;
+
+ @Override
+ public void run() {
+ while (true) {
+ ScheduledQueryPollResponse q =
context.schedulerService.scheduledQueryPoll();
+ if (q.isSetExecutionId()) {
+ try{
+ processQuery(q);
+ } catch (Throwable t) {
+ LOG.error("Unexpected exception during scheduled query
processing", t);
+ }
+ } else {
+ try {
+ Thread.sleep(context.getIdleSleepTime());
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ LOG.info("interrupted");
+ break;
+ }
+ }
+ }
+ }
+
+ QueryState lastState;
+ public synchronized void reportQueryProgress() {
Review comment:
Are we synchronizing this in case two requests asked for status after each
other and the first one did not return? Should we do something for the check
interval here so we do not end up with a lot of requests block here, e.g.,
exponential backoff or simply skipping query progress (and reporting it)?
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Issue Time Tracking
-------------------
Worklog Id: (was: 324724)
Time Spent: 2h 10m (was: 2h)
> Scheduled query support
> -----------------------
>
> Key: HIVE-21884
> URL: https://issues.apache.org/jira/browse/HIVE-21884
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21844.04.patch, HIVE-21844.05.patch,
> HIVE-21844.06.patch, HIVE-21844.07.patch, HIVE-21844.08.patch,
> HIVE-21844.09.patch, HIVE-21844.15.patch, HIVE-21844.19.patch,
> HIVE-21884.01.patch, HIVE-21884.02.patch, HIVE-21884.03.patch,
> HIVE-21884.09.patch, HIVE-21884.10.patch, HIVE-21884.10.patch,
> HIVE-21884.11.patch, HIVE-21884.12.patch, HIVE-21884.13.patch,
> HIVE-21884.14.patch, HIVE-21884.14.patch, HIVE-21884.14.patch,
> HIVE-21884.16.patch, HIVE-21884.17.patch, HIVE-21884.18.patch,
> HIVE-21884.20.patch, Scheduled queries2.pdf
>
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> design document:
> https://docs.google.com/document/d/1mJSFdJi_1cbxJTXC9QvGw2rQ3zzJkNfxOO6b5esmyCE/edit#
> in case the google doc is not reachable: [^Scheduled queries2.pdf]
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