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From "LiXin Ge (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14424) Add CRC32C performance test.
Date Wed, 17 May 2017 06:35:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013621#comment-16013621
] 

LiXin Ge commented on HADOOP-14424:
-----------------------------------

The checkstyle warnings of "Variable * must be private and have accessor methods. [VisibilityModifier]"
seems too sensitive in test code.
And there were so many such type warnings in the existing code, is it really worthy fixing?

> Add CRC32C performance test.
> ----------------------------
>
>                 Key: HADOOP-14424
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14424
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common
>    Affects Versions: 3.0.0-alpha2
>            Reporter: LiXin Ge
>            Assignee: LiXin Ge
>            Priority: Minor
>              Labels: test
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HADOOP-14424.patch
>
>
> The default checksum algorithm of Hadoop is CRC32C, so we'd better add a new test to
compare Crc32C chunked verification implementations.
> This test is based on Crc32PerformanceTest, what I have done in this test is:
> 1.CRC32C performance test.
> 2.CRC32C is not supported by java.util.zip in JAVA JDK, so just remove it from this test.
> 3.User can choose either direct buffer or non-directly buffer to run this test manually.
> 4.Take use of verifyChunkedSumsByteArray for native to support non-directly native test.



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