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https://issues.apache.org/jira/browse/HADOOP-17531?focusedWorklogId=565934&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-565934
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ASF GitHub Bot logged work on HADOOP-17531:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 14/Mar/21 15:42
Start Date: 14/Mar/21 15:42
Worklog Time Spent: 10m
Work Description: ayushtkn edited a comment on pull request #2732:
URL: https://github.com/apache/hadoop/pull/2732#issuecomment-798898695
Have removed the timeout from ``TestDistCpSystem`` it failed with a timeout
error in my latest build, where I just removed some unused import from the aws
package and with the checkstyle it passed in 15 secs only which was half the
timeout, the test doesn't goes through my part of code, and I am pretty sure
`DurationInfo` can't be that costly. In fact the test timeout out before
reaching the distCp stuff, Not sure, what happened.
Created a new PR without any changes, Still ``TestDistCpSystem`` failed
https://github.com/apache/hadoop/pull/2773#issuecomment-798921190
The recent test failure isn't related.
Please help review!!!
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Issue Time Tracking
-------------------
Worklog Id: (was: 565934)
Time Spent: 3h 20m (was: 3h 10m)
> DistCp: Reduce memory usage on copying huge directories
> -------------------------------------------------------
>
> Key: HADOOP-17531
> URL: https://issues.apache.org/jira/browse/HADOOP-17531
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Critical
> Labels: pull-request-available
> Attachments: MoveToStackIterator.patch, gc-NewD-512M-3.8ML.log
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Presently distCp, uses the producer-consumer kind of setup while building the
> listing, the input queue and output queue are both unbounded, thus the
> listStatus grows quite huge.
> Rel Code Part :
> https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/SimpleCopyListing.java#L635
> This goes on bredth-first traversal kind of stuff(uses queue instead of
> earlier stack), so if you have files at lower depth, it will like open up the
> entire tree and the start processing....
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