Thanks, Luke! But I'm still having problems. After importing all projects into Eclipse, I got 1007 erros. The first one:
"Project 'MapReduceTools' is missing required library: 'lib/hadoop-core.jar'" Then, many of the following kind: "Unbound classpath variable: 'M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0.jar' in project 'hadoop-mapreduce-client-app'" Is there any place where I can have a complete step list about how to develop Hadoop? The wiki seems no to be up-to-date. Can anyone help? Thanks in advance! Alexandre. On Tue, 4 Oct 2011 03:05:02 -0700, Luke Lu wrote > Try to do a mvn install -DskipTests -P-cbuild before mvn eclipse:eclipse.. > > On Mon, Oct 3, 2011 at 10:08 PM, Alexandre de Assis Bento Lima > <as...@cos.ufrj.br> wrote: > > Hi, > > > > I'm following the steps suggested by the wiki page: > > > > EclipseEnvironment - Hadoop Wiki > > (http://wiki.apache.org/hadoop/EclipseEnvironment) > > > > in order to have an Eclipse project for Hadoop. I'm exactly trying to > > execute the > > following command: > > > > mvn eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true > > > > But I always get the following error: > > > > [INFO] > > ------------------------------------------------------------------------ > > [INFO] BUILD FAILURE > > [INFO] > > ------------------------------------------------------------------------ > > [INFO] Total time: 12.657s > > [INFO] Finished at: Tue Oct 04 02:04:11 BRT 2011 > > [INFO] Final Memory: 31M/282M > > [INFO] > > ------------------------------------------------------------------------ > > [ERROR] Failed to execute goal on project hadoop-yarn-common: Could not > > resolve > > dependencies for project > > org.apache.hadoop:hadoop-yarn-common:jar:0.24.0-SNAPSHOT: > > Failed to collect dependencies for [log4j:log4j:jar:1.2.12 (compile), > > org.apache.hadoop:hadoop-yarn-api:jar:0.24.0-SNAPSHOT (compile), > > org.apache.avro:avro:jar:1.5.3 (compile), > > com.google.protobuf:protobuf-java:jar:2.4.0a > > (compile), org.apache.hadoop:hadoop-common:jar:0.24.0-SNAPSHOT (compile), > > org.apache.hadoop:hadoop-annotations:jar:0.24.0-SNAPSHOT (compile), > > junit:junit:jar:4.8.2 (compile), org.mockito:mockito-all:jar:1.8.5 (test), > > org.apache.hadoop:hadoop-common:jar:tests:0.24.0-SNAPSHOT (test), > > org.apache.hadoop:hadoop-hdfs:jar:0.24.0-SNAPSHOT (runtime), > > com.google.inject.extensions:guice-servlet:jar:2.0 (compile), > > org.jboss.netty:netty:jar:3.2.3.Final (compile), > > org.slf4j:slf4j-api:jar:1.6.1 > > (compile), org.slf4j:slf4j-log4j12:jar:1.6.1 (compile)]: Failed to read > > artifact > > descriptor for org.apache.hadoop:hadoop-yarn-api:jar:0.24.0-SNAPSHOT: > > Failure to find > > org.apache.hadoop:hadoop-yarn:pom:${yarn.version} in > > http://repository.jboss.org/nexus/content/groups/public/ was cached in the > > local > > repository, resolution will not be reattempted until the update interval of > > repository.jboss.org has elapsed or updates are forced -> [Help 1] > > > > Then, I try > > > > mvn -X eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true > > > > and get > > > > [DEBUG] > > ======================================================================= > > [INFO] > > [INFO] >>> maven-eclipse-plugin:2.8:eclipse (default-cli) @ > > hadoop-yarn-common >>> > > [DEBUG] Could not find metadata > > org.apache.hadoop:hadoop-yarn-api:0.24.0-SNAPSHOT/maven-metadata.xml in > > local > > (/home/assis/.m2/repository) > > [DEBUG] Using connector WagonRepositoryConnector with priority 0 for > > http://repository.apache.org/snapshots > > Downloading: > > http://repository.apache.org/snapshots/org/apache/hadoop/hadoop-yarn-api/0.24.0-SNAPSHOT/maven-metadata.xml > > Downloaded: > > http://repository.apache.org/snapshots/org/apache/hadoop/hadoop-yarn-api/0.24.0-SNAPSHOT/maven-metadata.xml > > (785 B at 1.0 KB/sec) > > [DEBUG] Reading resolution tracking file > > /home/assis/.m2/repository/org/apache/hadoop/hadoop-yarn-api/0.24.0-SNAPSHOT/resolver-status.properties > > [DEBUG] Writing resolution tracking file > > /home/assis/.m2/repository/org/apache/hadoop/hadoop-yarn-api/0.24.0-SNAPSHOT/resolver-status.properties > > [INFO] > > ------------------------------------------------------------------------ > > [INFO] Reactor Summary: > > [INFO] > > [INFO] Apache Hadoop Project POM ......................... SUCCESS [1.626s] > > [INFO] Apache Hadoop Annotations ......................... SUCCESS [0.289s] > > [INFO] Apache Hadoop Project Dist POM .................... SUCCESS [0.255s] > > [INFO] Apache Hadoop Assemblies .......................... SUCCESS [0.207s] > > [INFO] Apache Hadoop Auth ................................ SUCCESS [0.557s] > > [INFO] Apache Hadoop Auth Examples ....................... SUCCESS [0.384s] > > [INFO] Apache Hadoop Common .............................. SUCCESS [1.912s] > > [INFO] Apache Hadoop Common Project ...................... SUCCESS [0.083s] > > [INFO] Apache Hadoop HDFS ................................ SUCCESS [3.209s] > > [INFO] Apache Hadoop HDFS Project ........................ SUCCESS [0.160s] > > [INFO] hadoop-yarn-api ................................... SUCCESS [2.273s] > > [INFO] hadoop-yarn-common ................................ FAILURE [0.926s] > > > > I check the local repository and realize that there's no maven-metadata.xml > > file there. > > So, I download it myself, try again, and the same things happen. > > Can anyone help me, please? I'm using Ubuntu 11.04 with jdk1.7.0, maven > > 3.0.3 and > > protobuf 2.4.1. > > > > Thanks in advance! > > > > Alexandre A. B. Lima. > > ----------------------------------------------- > > COPPE / Computer Science > > Federal University of Rio de Janeiro > > Rio de Janeiro, Brazil. > > +55-21-2562-8690 > > > > Alexandre A. B. Lima. ----------------------------------------------- COPPE / Computer Science Federal University of Rio de Janeiro Rio de Janeiro, Brazil. +55-21-2562-8690
