解决Hadoop0.21.0 HDFS/MapReduce编译错误(ivy-resolve-common does not find hadoop-commo)

     最近老大安排，要跟踪HDFS ConcatenateFile的前提条件；于是尝试用ant/ivy编译了一下hdfs，提示ivy找不到hadoop-common组件；于是又编译了一下mapreduce，提示ivy找不到hadoop-comm/hadoop-hdfs；编译hadoop-common，提示编译成功；在编译mapreduce错误如下：

 

ivy-resolve-common:

[ivy:resolve] 

[ivy:resolve] :: problems summary ::

[ivy:resolve] :::: WARNINGS

[ivy:resolve] module not found: org.apache.hadoop#hadoop-common;0.21.0

[ivy:resolve] ==== apache-snapshot: tried

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-common/0.21.0/hadoop-common-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-common;0.21.0!hadoop-common.jar:

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-common/0.21.0/hadoop-common-0.21.0.jar

[ivy:resolve] ==== maven2: tried

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-common/0.21.0/hadoop-common-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-common;0.21.0!hadoop-common.jar:

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-common/0.21.0/hadoop-common-0.21.0.jar

[ivy:resolve] module not found: org.apache.hadoop#hadoop-common-test;0.21.0

[ivy:resolve] ==== apache-snapshot: tried

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-common-test/0.21.0/hadoop-common-test-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-common-test;0.21.0!hadoop-common-test.jar:

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-common-test/0.21.0/hadoop-common-test-0.21.0.jar

[ivy:resolve] ==== maven2: tried

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-common-test/0.21.0/hadoop-common-test-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-common-test;0.21.0!hadoop-common-test.jar:

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-common-test/0.21.0/hadoop-common-test-0.21.0.jar

[ivy:resolve] module not found: org.apache.hadoop#hadoop-hdfs;0.21.0

[ivy:resolve] ==== apache-snapshot: tried

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-hdfs/0.21.0/hadoop-hdfs-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-hdfs;0.21.0!hadoop-hdfs.jar:

[ivy:resolve]  https://repository.apache.org/content/repositories/snapshots/org/apache/hadoop/hadoop-hdfs/0.21.0/hadoop-hdfs-0.21.0.jar

[ivy:resolve] ==== maven2: tried

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-hdfs/0.21.0/hadoop-hdfs-0.21.0.pom

[ivy:resolve]  -- artifact org.apache.hadoop#hadoop-hdfs;0.21.0!hadoop-hdfs.jar:

[ivy:resolve]  http://repo1.maven.org/maven2/org/apache/hadoop/hadoop-hdfs/0.21.0/hadoop-hdfs-0.21.0.jar

[ivy:resolve] ::::::::::::::::::::::::::::::::::::::::::::::

[ivy:resolve] ::          UNRESOLVED DEPENDENCIES         ::

[ivy:resolve] ::::::::::::::::::::::::::::::::::::::::::::::

[ivy:resolve] :: org.apache.hadoop#hadoop-common;0.21.0: not found

[ivy:resolve] :: org.apache.hadoop#hadoop-common-test;0.21.0: not found

[ivy:resolve] :: org.apache.hadoop#hadoop-hdfs;0.21.0: not found

[ivy:resolve] ::::::::::::::::::::::::::::::::::::::::::::::

[ivy:resolve] 

[ivy:resolve] :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS

 

BUILD FAILED

/opt/hadoop-0.21.0/mapred/build.xml:1861: impossible to resolve dependencies:

resolve failed - see output for details

 

 

通过Google，发现原来这是Apache-Hadoop的BUG:

https://issues.apache.org/jira/browse/HDFS-1519(hdfs ivy配置bug)

 

主要原因是ivy配置问题：

hdfs的ivy在配置关联类库hadoop-common时候位置指定错误，具体修改如下：

 

hdfs/ivy.xml

<dependency org="org.apache.hadoop" name="hadoop-common" 

----- rev="${hadoop-common.version}" 

+++ rev="${hadoop-common.version}-SNAPSHOT"

conf="common->default"/>

hdfs/src/contrib/hdfsproxy/ivy.xml

       <dependency org="org.apache.hadoop"

         name="hadoop-common"

----       rev="${hadoop-common.version}"

+++      rev="${hadoop-common.version}-SNAPSHOT"

         conf="common->default"/>

       <dependency org="org.apache.hadoop"

         name="hadoop-common-test"

---        rev="${hadoop-common.version}"

+++     rev="${hadoop-common.version}-SNAPSHOT"

         conf="common->default"/>

hdfs/src/contrib/thriftfs/ivy.xml

       <dependency org="org.apache.hadoop"

             name="hadoop-common"

---        rev="${hadoop-common.version}"

+++     rev="${hadoop-common.version}-SNAPSHOT"

         conf="common->default"/>

 

 

 

mapreduce的ivy在配置关联类库hadoop-common/hadoop-dfs时候位置指定错误，修改方法与hdfs类似：

1.修改mapreduce project里的ivy.xml(多个)

    在eclipse里search file(ivy.xml):

    (1)rev="${hadoop-common.version}"  replace rev="${hadoop-common.version}-SNAPSHOT"

    (2)rev="${hadoop-hdfs.version}"  replace rev="${hadoop-hdfs.version}-SNAPSHOT"

2.修改buid.xml

          <unzip

         -- --      src="${common.ivy.lib.dir}/hadoop-hdfs-${hadoop-hdfs.version}.jar"

         +++     src="${common.ivy.lib.dir}/hadoop-hdfs-${hadoop-hdfs.version}-SNAPSHOT.jar"

         dest="${build.dir}">