Question

我正在尝试在docker容器中以伪模式运行HDFS，使用此页面配置：https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html#Pseudo-Distributed_Operation，但我没有使用start-all.sh脚本，因为它不应该是能够做ssh，所以我手动运行命令bin/hdfs --daemon start namenode|datanode来逐个启动它们。问题是我可以看到namenode成功启动，但是datanode退出而没有任何错误消息。来自datanode的最后一段日志是：

...
2018-04-09 21:04:03,830 INFO org.apache.hadoop.hdfs.server.datanode.checker.ThrottledAsyncChecker: Scheduling a check for [DISK]file:/apps/hadoop/hdfs/data
2018-04-09 21:04:04,188 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2018-04-09 21:04:04,296 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled Metric snapshot period at 10 second(s).
2018-04-09 21:04:04,296 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system started
2018-04-09 21:04:04,665 INFO org.apache.hadoop.hdfs.server.common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling
2018-04-09 21:04:04,667 INFO org.apache.hadoop.hdfs.server.datanode.BlockScanner: Initialized block scanner with targetBytesPerSec 1048576
2018-04-09 21:04:04,671 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Configured hostname is hdfs
2018-04-09 21:04:04,671 INFO org.apache.hadoop.hdfs.server.common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling
2018-04-09 21:04:04,677 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Starting DataNode with maxLockedMemory = 0
2018-04-09 21:04:04,733 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Opened streaming server at /0.0.0.0:9866
2018-04-09 21:04:04,735 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Balancing bandwidth is 10485760 bytes/s
2018-04-09 21:04:04,735 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Number threads for balancing is 50

core-site.xml档案：

<configuration>
    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://localhost</value>
    </property>
</configuration>

hdfs-site.xml是

<configuration>
    <property>
        <name>dfs.replication</name>
        <value>1</value>
    </property>

    <property>
        <name>dfs.namenode.name.dir</name>
        <value>/apps/hadoop/hdfs/name</value>
    </property>

    <property>
        <name>dfs.datanode.data.dir</name>
        <value>/apps/hadoop/hdfs/data</value>
    </property>
</configuration>

我从那里想念任何东西吗？

Answer 1

我认为这是基本图像问题，我使用阿尔卑斯山，一旦我改为centos，datanode工作！必须是高山缺少的东西，如果有人知道它是什么感激，因为基于centos的图像最终会比高山更大。

在docker容器中运行HDFS伪模式

1 个答案: