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https://issues.apache.org/jira/browse/HADOOP-11891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14520121#comment-14520121
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Andrew Wang commented on HADOOP-11891:
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Hey Arun, looks good, I think we can improve it a bit more by lazily opening
the FileInputStream too. That way we save the open and the FD if the Random is
never used.
> OsSecureRandom should lazily fill its reservoir
> -----------------------------------------------
>
> Key: HADOOP-11891
> URL: https://issues.apache.org/jira/browse/HADOOP-11891
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.7.0
> Reporter: Arun Suresh
> Assignee: Arun Suresh
> Fix For: 2.7.1
>
> Attachments: HADOOP-11891.1.patch
>
>
> The {{OsSecureRandom}} class that is initialized by on the the
> {{CryptoCodec}} implementations eagerly fills its reservoir of random bits.
> This will result in too many file descriptors being opened simply and is not
> really required if the client already has a random IV and key needed for
> decryption.
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