编译成功后会打包，放在hadoop-dist/target
# ls
antrun dist-tar-stitching.sh hadoop-2.6.0.tar.gz hadoop-dist-2.6.0-javadoc.jar maven-archiver
dist-layout-stitching.sh hadoop-2.6.0 hadoop-dist-2.6.0.jar javadoc-bundle-options test-dir
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