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https://issues.apache.org/jira/browse/HADOOP-15323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732771#comment-16732771
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wujinhu commented on HADOOP-15323:
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Thanks [~cheersyang] I have added debug log and docs as you suggested.
We should add this feature to branch 2.x also, because some of our users still
use hadoop 2.x now.
Please help to merge into those branches too. Many thanks.:)
> AliyunOSS: Improve copy file performance for AliyunOSSFileSystemStore
> ---------------------------------------------------------------------
>
> Key: HADOOP-15323
> URL: https://issues.apache.org/jira/browse/HADOOP-15323
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/oss
> Affects Versions: 2.10.0, 3.2.0, 3.1.1, 2.9.2, 3.0.3, 3.3.0
> Reporter: wujinhu
> Assignee: wujinhu
> Priority: Major
> Attachments: HADOOP-15323.001.patch, HADOOP-15323.002.patch,
> HADOOP-15323.003.patch
>
>
> Aliyun OSS will support shallow copy which means server will only copy
> metadata when copy object operation occurs.
> With shallow copy, we can use copyObject api instead of multi-part copy api
> if we do not change object storage type & encryption type & source object is
> uploaded by Put / Multipart upload api.
> We will try to use copyObject api, and check result. If shallow copy disabled
> for this object, then we will use multipart copy. So, I will remove
> fs.oss.multipart.upload.threshold configuration.
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