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$hdfs dfs -rmr crawl
    11/04/16 08:49:33 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=300000

我将 hadoop-0.21.0 与默认的单节点设置配置一起使用。

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2 回答 2

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It's not a warning, just a standard message. It shouldn't have been output at INFO level, however, because it does get printed with every message. In trunk it has been moved to DEBUG so you don't normally see it (in this JIRA). This will be incorporated into the next release.

于 2011-04-16T18:37:45.293 回答
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这只是一个 INFO 你有什么问题？

于 2011-04-16T08:24:48.197 回答