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https://issues.apache.org/jira/browse/HADOOP-15919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16690577#comment-16690577
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Weiwei Yang commented on HADOOP-15919:
--------------------------------------

Hi [~wujinhu]

I took a look at the patch, overall it looks good. A few nits

*TestOSS.java*

Could u replace 
{code:java}
public final Timeout testTimeout = new Timeout(90000);
{code}
with @Test (timeout = 90000L)? As {{Timeout}} is a deprecated class. And may I 
know why this needs a 90s timeout?

*TestOSSFileContext.java*

This is an empty class

*Index.md*

The description for {{fs.AbstractFileSystem.oss.impl}} is not very informative, 
as this is going to be a main user doc, can you add more information there?

*AliyunOSSTestUtils.java*

most of code in {{createTestFileSystem}} and {{createTestFileContext}} are 
same, can we reuse them by seperating to a private function?

*AliyunOSSFileSystemStore*

Not sure why you need to remove 

statistics.incrementBytesWritten(file.length());

it seems not related to the motivation of this jira, is it?

Thanks

> AliyunOSS: Enable Yarn to use OSS
> ---------------------------------
>
>                 Key: HADOOP-15919
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15919
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/oss
>    Affects Versions: 2.10.0, 2.9.1, 3.2.0, 3.1.1, 3.0.3
>            Reporter: wujinhu
>            Assignee: wujinhu
>            Priority: Major
>         Attachments: HADOOP-15919.001.patch, HADOOP-15919.002.patch
>
>
> Uses DelegateToFileSystem to expose AliyunOSSFileSystem as an 
> AbstractFileSystem



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