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Posted to common-issues@hadoop.apache.org by "Zoran Dimitrijevic (JIRA)" <ji...@apache.org> on 2015/04/11 21:41:12 UTC
[jira] [Updated] (HADOOP-11827) Speed-up distcp buildListing()
using threadpool
[ https://issues.apache.org/jira/browse/HADOOP-11827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zoran Dimitrijevic updated HADOOP-11827:
----------------------------------------
Attachment: HADOOP-11827.patch
test patch report from my laptop:
{color:green}+1 overall{color}.
{color:green}+1 @author{color}. The patch does not contain any @author tags.
{color:green}+1 tests included{color}. The patch appears to include 4 new or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new Findbugs (version 3.0.1) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings.
> Speed-up distcp buildListing() using threadpool
> -----------------------------------------------
>
> Key: HADOOP-11827
> URL: https://issues.apache.org/jira/browse/HADOOP-11827
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Affects Versions: 3.0.0
> Reporter: Zoran Dimitrijevic
> Assignee: Zoran Dimitrijevic
> Priority: Minor
> Attachments: HADOOP-11827.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> For very large source trees on s3 distcp is taking long time to build file listing (client code, before starting mappers). For a dataset I used (1.5M files, 50K dirs) it was taking 65 minutes before my fix in HADOOP-11785 and 36 minutes after the fix).
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