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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4046) ChecksumTypeProto use NULL as enum value which is illegal in C/C++
Date Sat, 13 Oct 2012 07:31:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475547#comment-13475547
] 

Hadoop QA commented on HDFS-4046:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12549006/HDFS-4046-ChecksumType-NULL-and-TestAuditLogs-bug.patch
  against trunk revision .

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

    {color:green}+1 tests included{color}.  The patch appears to include 2 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any 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
1.3.9) warnings.

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/3328//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3328//console

This message is automatically generated.
                
> ChecksumTypeProto use NULL as enum value which is illegal in C/C++
> ------------------------------------------------------------------
>
>                 Key: HDFS-4046
>                 URL: https://issues.apache.org/jira/browse/HDFS-4046
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Binglin Chang
>            Assignee: Binglin Chang
>            Priority: Minor
>         Attachments: HDFS-4046-ChecksumType-NULL-and-TestAuditLogs-bug.patch, HDFS-4046-ChecksumType-NULL.patch
>
>
> I tried to write a native hdfs client using protobuf based protocol, when I generate
c++ code using hdfs.proto, the generated file can not compile, because NULL is an already
defined macro.
> I am thinking two solutions:
> 1. refactor all DataChecksum.Type.NULL references to NONE, which should be fine for all
languages, but this may breaking compatibility.
> 2. only change protobuf definition ChecksumTypeProto.NULL to NONE, and use enum integer
value(DataChecksum.Type.id) to convert between ChecksumTypeProto and DataChecksum.Type, and
make sure enum integer values are match(currently already match).
> I can make a patch for solution 2.
>  

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