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From "Genmao Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13377) Phase I: Some improvements for stabilization.
Date Fri, 28 Oct 2016 07:36:58 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Genmao Yu updated HADOOP-13377:
    Summary: Phase I: Some improvements for stabilization.  (was: Phase I: Some improvement
for incorporating Aliyun OSS file system implementation)

> Phase I: Some improvements for stabilization.
> ---------------------------------------------
>                 Key: HADOOP-13377
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13377
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.8.0, HADOOP-12756
>            Reporter: Genmao Yu
>            Assignee: Genmao Yu
>             Fix For: 3.0.0-alpha2
> This work is based on [HADOOP-12756|https://issues.apache.org/jira/browse/HADOOP-12756].

> There are some stability problems which we should pay attention to, include but not limited
> 1. OSS will close long-time connection(> 3h) and idle connection(>1minute), while
it is pretty common.
> 2. The 'copy' operation is time-consuming, so we could use the existing Job/Task executing
logic, i.e. copy temp result from temp directory to final directory.
> and some hack optimization:
> 1. use double buffering and  multi-thread when read oss data
> 2.  data is split in chunk and uploaded in ‘multipart’  way

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