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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15149) CryptoOutputStream should implement StreamCapabilities
Date Fri, 29 Dec 2017 22:02:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16306570#comment-16306570
] 

Mike Drob commented on HADOOP-15149:
------------------------------------

Thanks for the quick turnaround on this!

> CryptoOutputStream should implement StreamCapabilities
> ------------------------------------------------------
>
>                 Key: HADOOP-15149
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15149
>             Project: Hadoop Common
>          Issue Type: Task
>          Components: fs
>    Affects Versions: 3.0.0
>            Reporter: Mike Drob
>            Assignee: Xiao Chen
>             Fix For: 3.1.0, 2.10.0, 2.9.1, 3.0.1
>
>         Attachments: HADOOP-15149.01.patch
>
>
> Running some tests with HBase on HDFS with encryption, we noticed that CryptoOutputStream
doesn't implement StreamCapabilities.
> Specifically, we have a HdfsDataOutputStream wrapping a CryptoOutputStream. The calls
to {{hasCapability}} on the HDOS will always return false, even though the COS could be wrapping
something that supports it, as evidenced by the implementation of hsync and hflush here.



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