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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10967) Improve DefaultCryptoExtension#generateEncryptedKey performance
Date Wed, 13 Aug 2014 14:03:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095487#comment-14095487

Hadoop QA commented on HADOOP-10967:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common:


    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/4461//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/4461//console

This message is automatically generated.

> 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
>         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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