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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14072) AliyunOSS: Failed to read from stream when seek beyond the download size
Date Wed, 15 Feb 2017 08:36:41 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kai Zheng updated HADOOP-14072:
-------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 3.0.0-alpha3
           Status: Resolved  (was: Patch Available)

It's a good catch and fix. LGTM and +1.

Committed to trunk. Thanks Genmao for the contribution!

> AliyunOSS: Failed to read from stream when seek beyond the download size
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-14072
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14072
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/oss
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Genmao Yu
>            Assignee: Genmao Yu
>             Fix For: 3.0.0-alpha3
>
>         Attachments: HADOOP-14072.001.patch
>
>
> {code}
> public synchronized void seek(long pos) throws IOException {
>     checkNotClosed();
>     if (position == pos) {
>       return;
>     } else if (pos > position && pos < position + partRemaining) {
>       AliyunOSSUtils.skipFully(wrappedStream, pos - position);
>       position = pos;
>     } else {
>       reopen(pos);
>     }
>   }
> {code}
> In seek function, we need to update the partRemaining when the seeking position is located
in downloaded part.



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