[
https://issues.apache.org/jira/browse/HIVE-23324?focusedWorklogId=461618&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-461618
]
ASF GitHub Bot logged work on HIVE-23324:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 21/Jul/20 14:43
Start Date: 21/Jul/20 14:43
Worklog Time Spent: 10m
Work Description: belugabehr commented on pull request #1275:
URL: https://github.com/apache/hive/pull/1275#issuecomment-661904392
Let us not re-invent the wheel here:
```
public static void main(String[] args) throws IOException
{
ExecutorService service = Executors.newFixedThreadPool(2);
CompletionService<String> completionService = new
ExecutorCompletionService<>(service);
for (int i = 0; i < 10; i++)
{
final int t = i;
completionService.submit(() -> {
return clean("File" + t);
});
}
for (int i = 0; i < 10; ++i) {
try {
String path = completionService.take().get();
System.out.println(path);
} catch (Exception ignore) {}
}
}
public static String clean(String path)
{
return "Cleaned: " + path;
}
```
https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ExecutorCompletionService.html
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Issue Time Tracking
-------------------
Worklog Id: (was: 461618)
Time Spent: 1h 40m (was: 1.5h)
> 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: 1h 40m
> 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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