有0个datanode正在运行，在此操作中不排除任何节点

Question

masters
54.68.218.192 (public IP of the master node)

slaves
54.68.169.62 (public IP of the slave node)

<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>

<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>

<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.name.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/datanode</value>
</property>
</configuration>

<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://54.68.218.192:10001</value>
</property>
</configuration>

<configuration>
<property>
<name>mapred.job.tracker</name>
<value>54.68.218.192:10002</value>
</property>
</configuration>

<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.name.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/datanode</value>
</property>
</configuration>

在Namenode上运行的JP提供以下内容：

5696 NameNode
6504 Jps
5905 SecondaryNameNode
6040 ResourceManager

和jps：

2883 DataNode
3496 Jps
3381 NodeManager

在我看来是对的。

hadoop fs -put count_inputfile /test/input/

put: File /count_inputfile._COPYING_ could only be replicated to 0 nodes instead of minReplication (=1).  There are 0 datanode(s) running and no node(s) are excluded in this operation.

hadoop-datanode log
INFO org.apache.hadoop.ipc.Client: Retrying connect to server:      54.68.218.192/54.68.218.192:10001. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

127.0.0.1 localhost
172.31.25.151 ip-172-31-25-151.us-west-2.compute.internal
172.31.25.152 ip-172-31-25-152.us-west-2.compute.internal

为什么我还在犯错误？

Answer 1

有两件事对我起作用了,

步骤1：停止hadoop并从hduser中清除临时文件

sudo rm -R /tmp/*

此外，您可能需要删除并重新创建/app/hadoop/tmp（主要是当我将hadoop版本从2.2.0更改为2.7.0时）

sudo rm -r /app/hadoop/tmp
sudo mkdir -p /app/hadoop/tmp
sudo chown hduser:hadoop /app/hadoop/tmp
sudo chmod 750 /app/hadoop/tmp

hdfs namenode -format

hduser@prayagupd:~$ jps
19135 NameNode
20497 Jps
19477 DataNode
20447 NodeManager
19902 SecondaryNameNode
20106 ResourceManager