编译时间很长，错误也很长：

Buildfile: /root/hadoop-0.20.2/build.xml

clover.setup:

clover.info:

[echo]

[echo] Clover not found. Code coverage reports disabled.

[echo]

clover:

ivy-download:

ivy-init-dirs:

[mkdir] Created dir: /root/hadoop-0.20.2/build/ivy

[mkdir] Created dir: /root/hadoop-0.20.2/build/ivy/lib

[mkdir] Created dir: /root/hadoop-0.20.2/build/ivy/report

[mkdir] Created dir: /root/hadoop-0.20.2/build/ivy/maven

ivy-probe-antlib:

ivy-init-antlib:

ivy-init:

[ivy:configure] :: Ivy 2.0.0-rc2 - 20081028224207 :: http://ant.apache.org/ivy/ ::

:: loading settings :: file = /root/hadoop-0.20.2/ivy/ivysettings.xml

ivy-resolve-common:

[ivy:resolve] :: resolving dependencies :: org.apache.hadoop#Hadoop;working@cloud00

[ivy:resolve] confs: [common]

[ivy:resolve] :: resolution report :: resolve 883026ms :: artifacts dl 1ms

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

modules || artifacts

conf | number| search|dwnlded|evicted|| number|dwnlded

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

common | 21 | 0 | 0 | 0 || 0 | 0

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

[ivy:resolve] :: problems summary ::

[ivy:resolve] :::: WARNINGS

[ivy:resolve] module not found: #commons-logging;1.0.4

[ivy:resolve] ==== local: tried

[ivy:resolve] /root/.ivy2/local/commons-logging/commons-logging/1.0.4/ivys/ivy.xml

[ivy:resolve] -- artifact commons-logging#commons-logging;1.0.4!commons-logging.jar:

[ivy:resolve] /root/.ivy2/local/commons-logging/commons-logging/1.0.4/jars/commons-logging.jar

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

[ivy:resolve] http://repo1.maven.org/maven2/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.pom

[ivy:resolve] -- artifact commons-logging#commons-logging;1.0.4!commons-logging.jar:

[ivy:resolve] http://repo1.maven.org/maven2/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar

[ivy:resolve] module not found: log4j#log4j;1.2.15

[ivy:resolve] ==== local: tried

[ivy:resolve] /root/.ivy2/local/log4j/log4j/1.2.15/ivys/ivy.xml

[ivy:resolve] -- artifact log4j#log4j;1.2.15!log4j.jar:

[ivy:resolve] /root/.ivy2/local/log4j/log4j/1.2.15/jars/log4j.jar

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

[ivy:resolve] http://repo1.maven.org/maven2/log4j/log4j/1.2.15/log4j-1.2.15.pom

[ivy:resolve] -- artifact log4j#log4j;1.2.15!log4j.jar:

[ivy:resolve] http://repo1.maven.org/maven2/log4j/log4j/1.2.15/log4j-1.2.15.jar

后面类似，略

在网上https://issues.apache.org/jira/browse/HDFS-1519找到解决方案如下：

hdfs/ivy.xml

---

+++

hdfs/src/contrib/hdfsproxy/ivy.xml

         name="hadoop-common"

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

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

         conf="common->default"/>

         name="hadoop-common-test"

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

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

         conf="common->default"/>

hdfs/src/contrib/thriftfs/ivy.xml

         name="hadoop-common"

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

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

         conf="common->default"/>

但是为什么我没有这些文件啊！！！在工程里面搜索ivy.xml。只找到src下的ivy.xml。发现没有找到的那些模块在这个文件里面全有！问题肯定出在这些包的路径上！找不到模块后，先在local寻找，后用maven2下载，都没有成功。对commons-logging来说，local为/root/.ivy2/local/commons-logging/commons-logging/1.0.4/jars/，可以尝试将这些包从工程中搜到，然后放入该文件夹(注意改名字！)。发现还是不行，看来是我的理解错误。

于是，我仔细搜索了一下整个工程，发现ivy文件夹下的文件hadoop-core.pom,里面同样有一些关于这些jar包的配置信息，抱着试试看的心理，我将

commons-logging

      commons-logging

      ${commons-logging.version}改成：

commons-logging

      commons-logging

      ${commons-logging.version}-SNAPSHOT

结果显示：[ivy:resolve]   found commons-logging#commons-logging;1.0.4 in local

成功！

真是个让人纠结了一上午的问题！！

注意：上面两条得结合着用，此时也顾不上再做进一步的探索了，就这么地吧，反正好用了。

还有啊，那么多jar包全部需要按提示的路径放置，真是一项大工程！应该有更好的解决办法，求指教！



[ivy:resolve]
        /root/.ivy2/local/commons-logging/commons-logging/1.0.4/jars/commons-logging.jar







[ivy:resolve]
        /root/.ivy2/local/log4j/log4j/1.2.15/jars/log4j.jar







[ivy:resolve]
        /root/.ivy2/local/commons-httpclient/commons-httpclient/3.0.1/jars/commons-httpclient.jar







[ivy:resolve]
        /root/.ivy2/local/commons-codec/commons-codec/1.3/jars/commons-codec.jar







[ivy:resolve]
        /root/.ivy2/local/commons-cli/commons-cli/1.2/jars/commons-cli.jar







[ivy:resolve]
        /root/.ivy2/local/xmlenc/xmlenc/0.52/jars/xmlenc.jar







[ivy:resolve]
        /root/.ivy2/local/net.java.dev.jets3t/jets3t/0.6.1/jars/jets3t.jar







[ivy:resolve]
        /root/.ivy2/local/commons-net/commons-net/1.4.1/jars/commons-net.jar







[ivy:resolve]
        /root/.ivy2/local/org.mortbay.jetty/servlet-api-2.5/6.1.14/jars/servlet-api-2.5.jar







[ivy:resolve]
        /root/.ivy2/local/org.mortbay.jetty/jetty/6.1.14/jars/jetty.jar







[ivy:resolve]
        /root/.ivy2/local/org.mortbay.jetty/jetty-util/6.1.14/jars/jetty-util.jar







[ivy:resolve]
        /root/.ivy2/local/tomcat/jasper-runtime/5.5.12/jars/jasper-runtime.jar







[ivy:resolve]
        /root/.ivy2/local/tomcat/jasper-compiler/5.5.12/jars/jasper-compiler.jar







[ivy:resolve]
        /root/.ivy2/local/commons-el/commons-el/1.0/jars/commons-el.jar







[ivy:resolve]
        /root/.ivy2/local/junit/junit/3.8.1/jars/junit.jar







[ivy:resolve]
        /root/.ivy2/local/commons-logging/commons-logging-api/1.0.4/jars/commons-logging-api.jar







[ivy:resolve]
        /root/.ivy2/local/org.slf4j/slf4j-api/1.4.3/jars/slf4j-api.jar







[ivy:resolve]
        /root/.ivy2/local/org.eclipse.jdt/core/3.1.1/jars/core.jar







[ivy:resolve]
        /root/.ivy2/local/oro/oro/2.0.8/jars/oro.jar







[ivy:resolve]
        /root/.ivy2/local/org.slf4j/slf4j-log4j12/1.4.3/jars/slf4j-log4j12.jar





[ivy:resolve]         /root/.ivy2/local/org.mockito/mockito-all/1.8.0/jars/mockito-all.jar



/root/.ivy2/local/net.java.dev.jets3t/jets3t/0.6.1/jars/jets3t.jar







/root/.ivy2/local/org.mortbay.jetty/jetty-util/6.1.14/jars/jetty-util.jar

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linux下编译hadoop0.20.2出现的一些问题(2)