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https://issues.apache.org/jira/browse/HADOOP-17620?focusedWorklogId=581107&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-581107
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ASF GitHub Bot logged work on HADOOP-17620:
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Author: ASF GitHub Bot
Created on: 12/Apr/21 15:58
Start Date: 12/Apr/21 15:58
Worklog Time Spent: 10m
Work Description: ayushtkn commented on a change in pull request #2861:
URL: https://github.com/apache/hadoop/pull/2861#discussion_r611748559
##########
File path:
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/contract/AbstractContractDistCpTest.java
##########
@@ -628,8 +629,15 @@ public void testDistCpWithIterator() throws Exception {
GenericTestUtils
.createFiles(remoteFS, source, getDepth(), getWidth(), getWidth());
+ GenericTestUtils.LogCapturer log =
Review comment:
Thanx @steveloughran, do you suggest that we should have two options
like -useiteratorforsource and -useiteratorfortarget. Do you think in that case
we would be able to save out on memory? since the target list is being build as
part of CopyCommitter, so even if one takes the normal path, We would get OOM,
just `when` will differ?
Regarding the log stuff, That was the only thing I could think of, to
confirm if iterator was used. And during migration to Log4J2, Will moving to
something like this will be of any help instead:
https://github.com/apache/hive/blob/master/ql/src/test/org/apache/hadoop/hive/ql/metadata/TestHive.java#L285
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Issue Time Tracking
-------------------
Worklog Id: (was: 581107)
Time Spent: 1h 20m (was: 1h 10m)
> DistCp: Use Iterator for listing target directory as well
> ---------------------------------------------------------
>
> Key: HADOOP-17620
> URL: https://issues.apache.org/jira/browse/HADOOP-17620
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.3.1, 3.4.0
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Use iterator for listing target directory as well, when {{-useiterator}}
> option is specified.
> Target is listed when delete option is specified.
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