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From: James Carman <james@carmanconsulting.com>
Date: Sun, 28 Jul 2013 17:00:16 -0400
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Subject: Re: Building Hadoop...
To: common-dev@hadoop.apache.org
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Okay, cool.  That's what I figured.  I'll try to figure out how to
install specific versions using homebrew and move on down the road.
Thanks!

On Sun, Jul 28, 2013 at 4:22 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> Protobuf 2.5 isn't compatible with 2.4.1 which is the standard used by Hadoop 2.0
>
> On Jul 28, 2013, at 1:13 PM, James Carman <james@carmanconsulting.com> wrote:
>
>> I am on Mac OS X.  I've installed protobuf 2.5.0 using homebrew.
>> However, I'm getting errors like this:
>>
>> [ERROR] Failed to execute goal
>> org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile
>> (default-compile) on project hadoop-common: Compilation failure:
>> Compilation failure:
>> [ERROR] /Users/jcarman/IdeaProjects/hadoop/hadoop-common-project/hadoop-common/target/generated-sources/java/org/apache/hadoop/ipc/protobuf/RpcHeaderProtos.java:[1486,37]
>> cannot find symbol
>> [ERROR] symbol  : class Parser
>> [ERROR] location: package com.google.protobuf
>> [ERROR] /Users/jcarman/IdeaProjects/hadoop/hadoop-common-project/hadoop-common/target/generated-sources/java/org/apache/hadoop/ipc/protobuf/RpcHeaderProtos.java:[1497,30]
>> cannot find symbol
>>
>> Is this because protobuf is generating source code using a newer
>> version and some of the classes aren't there?
>>
>>
>> On Sun, Jul 28, 2013 at 10:15 AM, Ted Yu <yuzhihong@gmail.com> wrote:
>>> You should be using libprotoc 2.4.1
>>>
>>> Cheers
>>>
>>> On Sun, Jul 28, 2013 at 7:08 AM, James Carman
>>> <jcarman@carmanconsulting.com>wrote:
>>>
>>>> Is there anything special I have to do to get the build working on my
>>>> local machine?  I have installed protocol buffers and I of course have
>>>> Maven/JDK.  I am getting compiler errors relating to protobuf.  Do I need a
>>>> different version in my local Maven repository?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>