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https://issues.apache.org/jira/browse/HADOOP-10967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14098446#comment-14098446
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Hudson commented on HADOOP-10967:
---------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk #647 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/647/])
HADOOP-10967. Improve DefaultCryptoExtension#generateEncryptedKey performance.
(hitliuyi via tucu) (tucu:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1618101)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderCryptoExtension.java
> Improve DefaultCryptoExtension#generateEncryptedKey performance
> ----------------------------------------------------------------
>
> Key: HADOOP-10967
> URL: https://issues.apache.org/jira/browse/HADOOP-10967
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 2.6.0
> Reporter: Yi Liu
> Assignee: Yi Liu
> Fix For: 3.0.0
>
> Attachments: HADOOP-10967.001.patch
>
>
> This JIRA is to improve generateEncryptedKey performance:
> *1.* SecureRandom#generateSeed is very slow, we should use
> SecureRandom#nextBytes to generate the {{IV}} which is much faster.
> *2.* Define SecureRandom as threadlocal object which can improve the
> performance a bit.
> *3.* Use {{new SecureRandom()}} instead of SHA1PRNG, the former has better
> entropy.
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