伪分布式模式Hadoop [英] Pseudo Distributed Mode Hadoop
问题描述
我在Mac& C安装了伪分布式模式 Hadoop 2.7.3 完成了 Plural Sight 中指定的所有配置。我将 Csv文件从本地复制到hdfs。但第二天,当我搜索文件时,它不存在于hdfs中并自动删除。有没有其他的conf设置,以便我的文件不会丢失?
core-site.xml
< configuration>
<属性>
<名称> fs.defaultFS< / name>
< value> hdfs:// localhost:9000< / value>
< / property>
< / configuration>
hdfs-site.xml
< configuration>
<属性>
< name> dfs.replication< / name>
<值> 1< /值>
< / property>
< / configuration>
谢谢,
将这些属性添加到 hdfs-site.xml
<性>
<名称> dfs.namenode.name.dir< /名称>
< value> / home / username / hadoop-dfs / name< / value>
< / property>
<属性>
< name> dfs.datanode.data.dir< / name>
< value> / home / username / hadoop-dfs / data< / value>
< / property>
元数据和数据块存储在 / tmp
,因为它是 hadoop.tmp.dir
的值。重新启动时删除 / tmp
中的内容。
$ b 添加这些属性后,格式化
namenode
并启动服务。 I have installed Pseudo Distributed mode Hadoop 2.7.3 in Mac & did all Configuration which is specified in Plural Sight. I Copied Csv file from Local to hdfs. But next day when i searched for files , it is not present in hdfs and removed automatically. Is there any other conf setting so that my files are not loss?
core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>
hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
Thanks,
Add these properties to hdfs-site.xml
<property>
<name>dfs.namenode.name.dir</name>
<value>/home/username/hadoop-dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>/home/username/hadoop-dfs/data</value>
</property>
The metadata and data blocks are stored under /tmp
by default as it is the value of hadoop.tmp.dir
. The contents inside /tmp
are deleted on reboot.
After adding these properties, format the namenode
and start the services.
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