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From Karim Awara <karim.aw...@kaust.edu.sa>
Subject Re: MiniDFSCluster setup
Date Mon, 16 Dec 2013 10:33:13 GMT
You were right on both of them! It is now working. Thanks a lot.

--
Best Regards,
Karim Ahmed Awara


On Mon, Dec 16, 2013 at 4:53 AM, Vinayakumar B <vinayakumar.b@huawei.com>wrote:

>  Hi Kareem,
>
>  Hi See that issue you are facing is
> https://issues.apache.org/jira/browse/HADOOP-9908,
>
>
>
> It expectes common-version-info.properties to be present under classes
> directory, which will be present while running tests from maven. But when
> eclipse cleans the output and compiles again this will be cleaned.
>
>
>
> So I suggest merge the changes to your VersionInfo.java from HADOOP-9908
> and run the test. It just eats the NPE and unblock you from running tests.
>
>
>
> BTW, You may face another problem saying, “webapps/hdfs not found”  after
> version file problem is solved.
>
>    Well I have a solution for that too. If yes, follow below steps to
> resolve that.
>
>    This kind of workaround only, I didnt see the fix available.
>
> 1.       Create a folder in *hadoop-hdfs, *ex:  *web*
>
> 2.       Copy full  *hadoop-hdfs/target/webapps *directory to
> *hadoop-hdfs/web*
>
> 3.       Now add *hadoop-hdfs/web *as source directory in eclipse project.
>
> 4.       Rebuild hadoop-hdfs and run the test.
>
>
>
> If any more problems let me know.
>
>
>
> Cheers,
>
> Vinayakumar B
>
>
>
> *From:* Karim Awara [mailto:karim.awara@kaust.edu.sa]
> *Sent:* 15 December 2013 22:26
> *To:* user
> *Subject:* Re: MiniDFSCluster setup
>
>
>
>
>
> I imported all the projects under the root dir "hadoop-2.2.0-src". And
> still the same error. I havenot touched any conf files after I build with
> maven.  Is that correct? because it seems eclipse is not aware of some
> sources that command-line maven is aware of.
>
>
>   --
> Best Regards,
> Karim Ahmed Awara
>
>
>
> On Sun, Dec 15, 2013 at 7:10 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> Can you import from root of your workspace so that all sub-projects are
> imported ?
>
>
>
> Cheers
>
>
>
> On Sun, Dec 15, 2013 at 7:45 AM, Karim Awara <karim.awara@kaust.edu.sa>
> wrote:
>
>
>
> Attached below. So What I did was after downloading hadoop src. I ran
>
> $ mvn install -DskipTests
>
> $ mvn eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true
>
>
>
> And imported both Hadoop Common and HDFS projects into eclipse.
>
>
>
>
>
>
>
>
> java.lang.ExceptionInInitializerError
>     at
> org.apache.hadoop.hdfs.server.common.Storage.getBuildVersion(Storage.java:1026)
>     at
> org.apache.hadoop.hdfs.server.protocol.NamespaceInfo.<init>(NamespaceInfo.java:58)
>     at
> org.apache.hadoop.hdfs.server.namenode.NNStorage.newNamespaceInfo(NNStorage.java:550)
>     at
> org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:144)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:837)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:266)
>     at
> org.apache.hadoop.hdfs.DFSTestUtil.formatNameNode(DFSTestUtil.java:122)
>     at
> org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:775)
>     at
> org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:642)
>     at
> org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:334)
>     at
> org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:316)
>     at
> org.apache.hadoop.hdfs.TestWriteRead.initJunitModeTest(TestWriteRead.java:77)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>     at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:616)
>     at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
>     at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>     at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
>     at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
>     at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
>     at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
>     at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
>     at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
>     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
>     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
>     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
>     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
>     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
>     at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
>     at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
>     at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
> Caused by: java.lang.NullPointerException
>     at java.util.Properties$LineReader.readLine(Properties.java:435)
>     at java.util.Properties.load0(Properties.java:354)
>     at java.util.Properties.load(Properties.java:342)
>     at org.apache.hadoop.util.VersionInfo.<init>(VersionInfo.java:51)
>     at org.apache.hadoop.util.VersionInfo.<clinit>(VersionInfo.java:97)
>     ... 36 more
>
> java.lang.NullPointerException
>     at org.apache.hadoop.hdfs.TestWriteRead.shutdown(TestWriteRead.java:89)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>     at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:616)
>     at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
>     at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>     at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
>     at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:36)
>     at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
>     at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
>     at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
>     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
>     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
>     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
>     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
>     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
>     at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
>     at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
>     at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>     at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
>
>
>
>
>
>   --
> Best Regards,
> Karim Ahmed Awara
>
>
>
> On Sun, Dec 15, 2013 at 5:59 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> Can you show us the full stack trace ?
>
> In Eclipse, was there any project shown with a red bang or red cross ?
>
>
>
> Cheers
>
>
>
> On Sun, Dec 15, 2013 at 2:26 AM, Karim Awara <karim.awara@kaust.edu.sa>
> wrote:
>
>
>
> It tells me java.lang.ExceptionInitializerError at
> org.apache.....hdfs.server.common.Storage.getBuildVersion!
>
> I feel I am missing some parameters?
>
>
>   --
> Best Regards,
> Karim Ahmed Awara
>
>
>
> On Sun, Dec 15, 2013 at 5:08 AM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> You can use the following command to generate .project files for Eclipse
> (at the root of your workspace):
>
> mvn clean package -DskipTests eclipse:eclipse
>
>
>
> When you import hadoop, call sub-projects would be imported.
>
>
>
> I was able to run TestWriteRead in Eclipse successfully.
>
>
>
> Cheers
>
>
>
> On Sat, Dec 14, 2013 at 4:56 PM, Karim Awara <karim.awara@kaust.edu.sa>
> wrote:
>
>
>
> Running the test from Maven through commandline works fine. But  I am
> using eclipse. And it generates problem if I try to run the test as Junit,
> as if eclipse is not aware of any of the conf parameters or args. Can
> someone point to me a detailed source where it explains how to run Junit
> through Eclipse for hadoop 2.2.x?
>
>
>   --
> Best Regards,
> Karim Ahmed Awara
>
>
>
> On Sun, Dec 15, 2013 at 2:55 AM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> If you search under hadoop-hdfs-project/hadoop-hdfs/src/test, you would
> see a lot of tests which use MiniDFSCluster
>
> e.g.
>
>     cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
>
>
> hadoop-hdfs-project/hadoop-hdfs/src/test//java/org/apache/hadoop/hdfs/TestWriteRead.java
>
>
>
> Cheers
>
>
>
> On Sat, Dec 14, 2013 at 2:43 PM, Karim Awara <karim.awara@kaust.edu.sa>
> wrote:
>
>   Hi,
>
> I read I can use MiniDFSCluster to set my own tests in case I modify hadop
> source code. I have built hadoop 2.2. However, I can't find any source on
> how to get the MiniDFSCluster working. Can someone point a link to me that
> helps?
>
>
>   --
> Best Regards,
> Karim Ahmed Awara
>
>
>   ------------------------------
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> received this message in error, please notify me immediately and delete
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-- 

------------------------------
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