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https://issues.apache.org/jira/browse/HADOOP-17531?focusedWorklogId=570964&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-570964
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ASF GitHub Bot logged work on HADOOP-17531:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 24/Mar/21 06:26
Start Date: 24/Mar/21 06:26
Worklog Time Spent: 10m
Work Description: ayushtkn commented on pull request #2808:
URL: https://github.com/apache/hadoop/pull/2808#issuecomment-805537866
Ran the S3A and optional HDFS tests:
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running
org.apache.hadoop.tools.contract.OptionalTestHDFSContractDistCp
[INFO] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
234.777 s - in org.apache.hadoop.tools.contract.OptionalTestHDFSContractDistCp
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.fs.contract.s3a.ITestS3AContractDistCp
[INFO] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
767.429 s - in org.apache.hadoop.fs.contract.s3a.ITestS3AContractDistCp
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0
AWS Region: ap-south-1
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Issue Time Tracking
-------------------
Worklog Id: (was: 570964)
Time Spent: 8h (was: 7h 50m)
> 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: 8h
> 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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