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https://issues.apache.org/jira/browse/HADOOP-13600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160028#comment-16160028
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ASF GitHub Bot commented on HADOOP-13600:
-----------------------------------------
Github user steveloughran commented on a diff in the pull request:
https://github.com/apache/hadoop/pull/157#discussion_r137931515
--- Diff:
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
---
@@ -269,7 +273,8 @@ public StorageStatistics provide() {
}
useListV1 = (listVersion == 1);
- initTransferManager();
+ this.uploads = createUploadTransferManager(conf);
+ this.copies = createCopyTransferManager(conf);
--- End diff --
I'd actually like this to be on demand. That way, if not needed, no
overhead of creating it. init times of s3a are already high
> S3a rename() to copy files in a directory in parallel
> -----------------------------------------------------
>
> Key: HADOOP-13600
> URL: https://issues.apache.org/jira/browse/HADOOP-13600
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.7.3
> Reporter: Steve Loughran
> Assignee: Sahil Takiar
>
> Currently a directory rename does a one-by-one copy, making the request
> O(files * data). If the copy operations were launched in parallel, the
> duration of the copy may be reducable to the duration of the longest copy.
> For a directory with many files, this will be significant
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