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https://issues.apache.org/jira/browse/HADOOP-15027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16350032#comment-16350032
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Kai Zheng commented on HADOOP-15027:
------------------------------------

Was the commit already corrected or should we reopen this? Could you help 
update or clarify some bit for me, [~Sammi]? Thanks.

> AliyunOSS: Support multi-thread pre-read to improve sequential read from 
> Hadoop to Aliyun OSS performance
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-15027
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15027
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/oss
>    Affects Versions: 3.0.0
>            Reporter: wujinhu
>            Assignee: wujinhu
>            Priority: Major
>             Fix For: 3.1.0, 2.10.0, 2.9.1, 3.0.1
>
>         Attachments: HADOOP-15027.001.patch, HADOOP-15027.002.patch, 
> HADOOP-15027.003.patch, HADOOP-15027.004.patch, HADOOP-15027.005.patch, 
> HADOOP-15027.006.patch, HADOOP-15027.007.patch, HADOOP-15027.008.patch, 
> HADOOP-15027.009.patch, HADOOP-15027.010.patch, HADOOP-15027.011.patch, 
> HADOOP-15027.012.patch, HADOOP-15027.013.patch, HADOOP-15027.014.patch
>
>
> Currently, AliyunOSSInputStream uses single thread to read data from 
> AliyunOSS,  so we can do some refactoring by using multi-thread pre-read to 
> improve read performance.



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