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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6615) Replace java.security.SecureRandom with org.apache.hadoop.crypto.random.SecureRandom in HDFS
Date Tue, 01 Jul 2014 14:00:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048896#comment-14048896
] 

Uma Maheswara Rao G commented on HDFS-6615:
-------------------------------------------

+1 for doing this. We need to wait until the branch merge if we want to target this on trunk
directly.

> Replace java.security.SecureRandom with org.apache.hadoop.crypto.random.SecureRandom
in HDFS
> --------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6615
>                 URL: https://issues.apache.org/jira/browse/HDFS-6615
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 3.0.0
>            Reporter: Yi Liu
>            Assignee: Yi Liu
>             Fix For: 3.0.0
>
>
> In java, {{SecureRandom}} is slow and is *pseudo* random bytes.
> In HADOOP-10734, we implement *true* secure random using hardware random number generator,
it has high performance about 22x speedup. 
> If the server doesn't support rdrand, use java {{SecureRandom}} as fallback.



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