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From Gmail <zouzhigu...@gmail.com>
Subject Re: Building kafka 0.8 in Intellij (was: Dead code?)
Date Fri, 15 Mar 2013 01:08:09 GMT
I got the same problem.... After I replace the dependencies for zkclient to 0.2 and it compiles.


在 15 Mar, 2013,8:21 AM,Dragos Manolescu <Dragos.Manolescu@servicenow.com> 写道:

> I dug into this and found a problem. The kafka build files show
> dependencies on two different versions of the zkclient code:
> 
> In core/build.sbt:
> 
> libraryDependencies ++= Seq(
>  "org.apache.zookeeper"  % "zookeeper"   % "3.3.4",
> "com.github.sgroschupf" % "zkclient"    % "0.1",
>  "org.xerial.snappy"     % "snappy-java" % "1.0.4.1",
>  "org.easymock"          % "easymock"    % "3.0" % "test",
>  "junit"                 % "junit"       % "4.1" % "test"
> )
> 
> And in project/Build.scala:
> 
>  // POM Tweaking for core:
>  def zkClientDep =
>    <dependency>
>      <groupId>zkclient</groupId>
>      <artifactId>zkclient</artifactId>
>      <version>20120522</version>
>      <scope>compile</scope>
>    </dependency>
> 
> 
> In version 0.1 of com.github.sgroschupf.ZkClient (listed in build.sbt)
> writeData doesn't return anything (http://j.mp/XBnn5g), which causes the
> compile error from my initial message (see below); that changed in 0.2
> (http://j.mp/WqUx4x).
> 
> zkclient-20120522 (listed in Build.scala) is checked in as a JAR in the
> core/lib folder (http://j.mp/10U4XgE).
> 
> I haven't researched why between sbt and IntelliJ ZkClient resolves
> differently, and don't know the history behind the "POM tweaking" comment
> above. I was able to build Kafka in IntelliJ by removing the reference to
> com.github.sgroschupf.ZkClient. Perhaps this is a leftover from 0.7.2 (I
> if I recall correctly it depends on 0.1)?
> 
> At any rate if anybody runs into similar problems when building in InteliJ
> I hope that this fix addresses them. Comments welcome.
> 
> Thanks,
> 
> -Dragos
> 
> 
> 
> On 3/14/13 11:30 AM, "Dragos Manolescu" <Dragos.Manolescu@servicenow.com>
> wrote:
> 
>> Hi Neha --
>> 
>> Thanks for the prompt answer. Yes that's what I did to open the project in
>> IntelliJ.
>> 
>> -Dragos
>> 
>> On 3/14/13 11:22 AM, "Neha Narkhede" <neha.narkhede@gmail.com> wrote:
>> 
>>> You can do ./sbt gen-idea to build the Intellij project .iml files.
>>> 
>>> Thanks,
>>> Neha
>>> 
>>> 
>>> On Thu, Mar 14, 2013 at 11:20 AM, Dragos Manolescu <
>>> Dragos.Manolescu@servicenow.com> wrote:
>>> 
>>>> Hi --
>>>> 
>>>> For the last couple of days I've been going through the 0.8 code as I'm
>>>> porting some 0.7.2 producers and consumers to the 0.8 API. While sbt
>>>> compiles the sources and indicates that 196 tests pass (I use Scala
>>>> 2.9.2),
>>>> I haven't been able to successfully build Kafka in IntelliJ (after
>>>> generating the IDEA project with gen-idea). The errors are in ZkUtils;
>>>> here's the first one, with subsequent errors caused by the absence of
>>>> the
>>>> returned value (of type org.apache.zookeeper.data.Stat).
>>>> 
>>>> scala: type mismatch;
>>>> found   : Unit
>>>> required: org.apache.zookeeper.data.Stat
>>>>      stat = client.writeData(path, data)
>>>>                             ^
>>>> As far as I can tell writeData is provided by
>>>> org.I0Itec.zkclient.ZkClient, and its return type is void rather than
>>>> Stat;
>>>> here's the signature:
>>>> 
>>>>    public void writeData(String path, Object object) {
>>>>        writeData(path, object, -1);
>>>>    }
>>>> 
>>>> I thought that this might be dead code; however IntelliJ shows ZkUtils
>>>> being used in the kafka, other and unit modules :-/
>>>> 
>>>> How do you marry IntelliJ with Kafka?
>>>> 
>>>> Thanks,
>>>> 
>>>> -Dragos
> 

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