[
https://issues.apache.org/jira/browse/HADOOP-17531?focusedWorklogId=566737&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-566737
]
ASF GitHub Bot logged work on HADOOP-17531:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 16/Mar/21 06:30
Start Date: 16/Mar/21 06:30
Worklog Time Spent: 10m
Work Description: ayushtkn commented on pull request #2732:
URL: https://github.com/apache/hadoop/pull/2732#issuecomment-799991776
Thanx @steveloughran for the review.
Sorted the S3 stuff, The test passes:
```
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.fs.contract.s3a.ITestS3AContractDistCp
[INFO] Tests run: 9, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
679.069 s - in org.apache.hadoop.fs.contract.s3a.ITestS3AContractDistCp
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 9, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 11:27 min
[INFO] Finished at: 2021-03-16T11:49:50+05:30
[INFO]
------------------------------------------------------------------------
ayushsaxena@ayushsaxena-MBP16 hadoop-aws %
```
Region: ap-south-1
The newly added HDFS contract:
```
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running
org.apache.hadoop.tools.contract.OptionalTestHDFSContractDistCp
[INFO] Tests run: 9, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
257.242 s - in org.apache.hadoop.tools.contract.OptionalTestHDFSContractDistCp
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 9, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 04:26 min
[INFO] Finished at: 2021-03-16T11:57:21+05:30
[INFO]
------------------------------------------------------------------------
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 566737)
Time Spent: 5h 40m (was: 5.5h)
> 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: 5h 40m
> 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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