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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-23324) Parallelise compaction directory cleaning process
Date Wed, 22 Jul 2020 08:08:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23324?focusedWorklogId=461892&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-461892
]

ASF GitHub Bot logged work on HIVE-23324:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 22/Jul/20 08:07
            Start Date: 22/Jul/20 08:07
    Worklog Time Spent: 10m 
      Work Description: pvary commented on a change in pull request #1275:
URL: https://github.com/apache/hive/pull/1275#discussion_r458611187



##########
File path: ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Cleaner.java
##########
@@ -64,13 +72,23 @@
   static final private String CLASS_NAME = Cleaner.class.getName();
   static final private Logger LOG = LoggerFactory.getLogger(CLASS_NAME);
   private long cleanerCheckInterval = 0;
+  private ExecutorService cleanerExecutor;
+  private CompletionService<Void> completionService;
 
   private ReplChangeManager replChangeManager;
 
   @Override
   public void init(AtomicBoolean stop) throws Exception {
     super.init(stop);
     replChangeManager = ReplChangeManager.getInstance(conf);
+    ThreadFactory threadFactory = new ThreadFactoryBuilder()

Review comment:
       Or maybe use this as an utility method to create the executor like:
   WhateverUtil.createExecutor(String name, int size) {}




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 461892)
    Time Spent: 3.5h  (was: 3h 20m)

> Parallelise compaction directory cleaning process
> -------------------------------------------------
>
>                 Key: HIVE-23324
>                 URL: https://issues.apache.org/jira/browse/HIVE-23324
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Marton Bod
>            Assignee: Adesh Kumar Rao
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 3.5h
>  Remaining Estimate: 0h
>
> Initiator processes the various compaction candidates in parallel, so we could follow
a similar approach in Cleaner where we currently clean the directories sequentially.



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