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https://issues.apache.org/jira/browse/HADOOP-18112?focusedWorklogId=738039&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-738039
 ]

ASF GitHub Bot logged work on HADOOP-18112:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Mar/22 09:19
            Start Date: 08/Mar/22 09:19
    Worklog Time Spent: 10m 
      Work Description: mukund-thakur commented on a change in pull request 
#4045:
URL: https://github.com/apache/hadoop/pull/4045#discussion_r821469346



##########
File path: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Lists.java
##########
@@ -232,4 +232,20 @@ private static int saturatedCast(long value) {
     return addAll(addTo, elementsToAdd.iterator());
   }
 
+  public static <T> List<List<T>> partition(List<T> originalList, int 
pageSize) {
+
+    Preconditions.checkArgument(originalList != null && originalList.size() > 
0,
+            "Invalid original list");
+    Preconditions.checkArgument(pageSize > 0, "Page size should " +
+            "be greater than 0 for performing partition");
+
+    List<List<T>> result = new ArrayList<>();

Review comment:
       subList() which is used below will return a view list only with the 
underlying storage of original list. 




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 738039)
    Time Spent: 2h 40m  (was: 2.5h)

> Rename operation fails during multi object delete of size more than 1000.
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-18112
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18112
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.3.1
>            Reporter: Mukund Thakur
>            Assignee: Mukund Thakur
>            Priority: Critical
>              Labels: pull-request-available
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> We see below exception during multi object delete of more than 1000 keys in 
> one go during rename operation.
>  
> {noformat}
> org.apache.hadoop.fs.s3a.AWSBadRequestException: rename 
> s3a://ms-targeting-prod-cdp-aws-dr-bkt/data/ms-targeting-prod-hbase/hbase/.tmp/data/default/dr-productionL.Address
>  to 
> s3a://ms-targeting-prod-cdp-aws-dr-bkt/user/root/.Trash/Current/data/ms-targetin
> g-prod-hbase/hbase/.tmp/data/default/dr-productionL.Address16438377847941643837797901
>  on 
> s3a://ms-targeting-prod-cdp-aws-dr-bkt/data/ms-targeting-prod-hbase/hbase/.tmp/data/default/dr-productionL.Address:
>  com.amazonaws.services.s3.model.AmazonS3Exception
> : The XML you provided was not well-formed or did not validate against our 
> published schema (Service: Amazon S3; Status Code: 400; Error Code: 
> MalformedXML; Request ID: XZ8PGAQHP0FGHPYS; S3 Extended Request ID: 
> vTG8c+koukzQ8yMRGd9BvWfmRwkCZ3fAs/EOiAV5S9E
> JjLqFTNCgDOKokuus5W600Z5iOa/iQBI=; Proxy: null), S3 Extended Request ID: 
> vTG8c+koukzQ8yMRGd9BvWfmRwkCZ3fAs/EOiAV5S9EJjLqFTNCgDOKokuus5W600Z5iOa/iQBI=:MalformedXML:
>  The XML you provided was not well-formed or did not validate against our 
> published schema 
> (Service: Amazon S3; Status Code: 400; Error Code: MalformedXML; Request ID: 
> XZ8PGAQHP0FGHPYS; S3 Extended Request ID: 
> vTG8c+koukzQ8yMRGd9BvWfmRwkCZ3fAs/EOiAV5S9EJjLqFTNCgDOKokuus5W600Z5iOa/iQBI=; 
> Proxy: null)
>         at 
> org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:247)
>         at 
> org.apache.hadoop.fs.s3a.s3guard.RenameTracker.convertToIOException(RenameTracker.java:267)
>         at 
> org.apache.hadoop.fs.s3a.s3guard.RenameTracker.deleteFailed(RenameTracker.java:198)
>         at 
> org.apache.hadoop.fs.s3a.impl.RenameOperation.removeSourceObjects(RenameOperation.java:706)
>         at 
> org.apache.hadoop.fs.s3a.impl.RenameOperation.completeActiveCopiesAndDeleteSources(RenameOperation.java:274)
>         at 
> org.apache.hadoop.fs.s3a.impl.RenameOperation.recursiveDirectoryRename(RenameOperation.java:484)
>         at 
> org.apache.hadoop.fs.s3a.impl.RenameOperation.execute(RenameOperation.java:312)
>         at 
> org.apache.hadoop.fs.s3a.S3AFileSystem.innerRename(S3AFileSystem.java:1912)
>         at 
> org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$rename$7(S3AFileSystem.java:1759)
>         at 
> org.apache.hadoop.fs.statistics.impl.IOStatisticsBinding.lambda$trackDurationOfOperation$5(IOStatisticsBinding.java:499)
>         at 
> org.apache.hadoop.fs.statistics.impl.IOStatisticsBinding.trackDuration(IOStatisticsBinding.java:444)
>         at 
> org.apache.hadoop.fs.s3a.S3AFileSystem.trackDurationAndSpan(S3AFileSystem.java:2250)
>         at 
> org.apache.hadoop.fs.s3a.S3AFileSystem.rename(S3AFileSystem.java:1757)
>         at org.apache.hadoop.fs.FileSystem.rename(FileSystem.java:1605)
>         at 
> org.apache.hadoop.fs.TrashPolicyDefault.moveToTrash(TrashPolicyDefault.java:186)
>         at org.apache.hadoop.fs.Trash.moveToTrash(Trash.java:110){noformat}



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