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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2017/08/09 09:33:00 UTC
[jira] [Updated] (HADOOP-14606) S3AInputStream: Handle http stream
skip(n) skipping < n bytes in a forward seek
[ https://issues.apache.org/jira/browse/HADOOP-14606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran updated HADOOP-14606:
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Summary: S3AInputStream: Handle http stream skip(n) skipping < n bytes in a forward seek (was: S3AInputStream: Handle skip(n) skipping < n bytes in a forward seek)
> S3AInputStream: Handle http stream skip(n) skipping < n bytes in a forward seek
> -------------------------------------------------------------------------------
>
> Key: HADOOP-14606
> URL: https://issues.apache.org/jira/browse/HADOOP-14606
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.8.1
> Reporter: Steve Loughran
>
> There's some hints in the InputStream docs that {{skip(n)}} may skip <n bytes. Codepaths only seem to do this if read() returns -1, meaning end of stream is reached. Wh
> If that happens when doing a forward seek via skip, then we have got our numbers wrong and are in trouble. Look for a negative response, log @ ERROR and revert to a close/reopen seek to an absolute position.
> *I have no evidence of this acutally occurring*
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