为什么我得到“security.Groups:组映射 impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping;”缓存超时=300000”?
$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 默认单节点设置配置< /a>.
$hdfs dfs -rmr crawl
11/04/16 08:49:33 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=300000
I'm using hadoop-0.21.0 with the default Single Node Setup configuration.
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这不是警告,只是标准消息。但是,它不应该在 INFO 级别输出,因为它确实会随每条消息一起打印。在主干中,它已被移至 DEBUG,因此您通常看不到它(在此 JIRA< /a>)。这将合并到下一个版本中。
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.
这只是一个信息,你有什么问题吗?
It's just an INFO what's your problem?