8

这实际上是一个备用 HA 名称节点。它使用与主服务器相同的设置进行配置并hdfs namenode -bootstrapStandby成功运行。它开始出现在配置文件中定义的标准 HTTP 端口 50070 上：

<property>
  <name>dfs.namenode.http-address.ha-hadoop.namenode2</name>
  <value>namenode2:50070</value>
</property>

启动开始正常然后点击：

15/02/02 08:06:17 INFO hdfs.DFSUtil: Starting Web-server for hdfs at: http://hadoop1:50070
15/02/02 08:06:17 INFO mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
15/02/02 08:06:17 INFO http.HttpRequestLog: Http request log for http.requests.namenode is not defined
15/02/02 08:06:17 INFO http.HttpServer2: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer2$QuotingInputFilter)
15/02/02 08:06:17 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context hdfs
15/02/02 08:06:17 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context logs
15/02/02 08:06:17 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static
15/02/02 08:06:17 INFO http.HttpServer2: Added filter 'org.apache.hadoop.hdfs.web.AuthFilter' (class=org.apache.hadoop.hdfs.web.AuthFilter)
15/02/02 08:06:17 INFO http.HttpServer2: addJerseyResourcePackage: packageName=org.apache.hadoop.hdfs.server.namenode.web.resources;org.apache.hadoop.hdfs.web.resources, pathSpec=/webhdfs/v1/*
15/02/02 08:06:17 INFO http.HttpServer2: HttpServer.start() threw a non Bind IOException
java.net.BindException: Port in use: hadoop1:50070
        at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:890)
        at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:826)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:142)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:695)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:585)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:754)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:738)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1427)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1493)
Caused by: java.net.BindException: Cannot assign requested address
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:444)
        at sun.nio.ch.Net.bind(Net.java:436)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
        at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:885)
        ... 8 more
15/02/02 08:06:17 INFO impl.MetricsSystemImpl: Stopping NameNode metrics system...
15/02/02 08:06:17 INFO impl.MetricsSystemImpl: NameNode metrics system stopped.
15/02/02 08:06:17 INFO impl.MetricsSystemImpl: NameNode metrics system shutdown complete.
15/02/02 08:06:17 FATAL namenode.NameNode: Failed to start namenode.
java.net.BindException: Port in use: hadoop1:50070
        at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:890)
        at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:826)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:142)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:695)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:585)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:754)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:738)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1427)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1493)
Caused by: java.net.BindException: Cannot assign requested address
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:444)
        at sun.nio.ch.Net.bind(Net.java:436)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
        at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:885)
        ... 8 more
15/02/02 08:06:17 INFO util.ExitUtil: Exiting with status 1
15/02/02 08:06:17 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop1.marketstudies.com/192.168.1.125
************************************************************/

我尝试通过设置更改 http-address 端口：

<property>
  <name>dfs.namenode.http-address.local1-hadoop.hadoop1</name>
  <value>hadoop1:10070</value>
</property>

但后来我得到与上面相同的只有新端口：

15/02/02 08:16:51 INFO hdfs.DFSUtil: Starting Web-server for hdfs at: http://hadoop1:10070
...
java.net.BindException: Port in use: hadoop1:10070
...
java.net.BindException: Port in use: hadoop1:10070

这在主名称节点上使用相同的配置。

这个问题似乎与我的问题相似，但答案没有帮助。我尝试设置dfs.http.address为其他东西，但它没有改变任何东西。我相信这是在 HA 中替换为的非 HA 配置选项dfs.namenode.http-address.ha-name.namenodename

从这里可以看出，实际上没有任何东西在监听 http 端口：

# netstat -anp |grep LIST
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      946/sshd
tcp        0      0 0.0.0.0:46712           0.0.0.0:*               LISTEN      2066/java
tcp        0      0 0.0.0.0:50010           0.0.0.0:*               LISTEN      28892/java
tcp        0      0 0.0.0.0:50075           0.0.0.0:*               LISTEN      28892/java
tcp        0      0 0.0.0.0:8480            0.0.0.0:*               LISTEN      1471/java
tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      2358/zabbix_agentd
tcp        0      0 0.0.0.0:50020           0.0.0.0:*               LISTEN      28892/java
tcp        0      0 0.0.0.0:8485            0.0.0.0:*               LISTEN      1471/java
tcp        0      0 0.0.0.0:8040            0.0.0.0:*               LISTEN      2066/java
tcp        0      0 0.0.0.0:8042            0.0.0.0:*               LISTEN      2066/java
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      1020/mysqld
tcp6       0      0 :::22                   :::*                    LISTEN      946/sshd

尝试以 root 用户身份启动，看看是否是某种 perms 问题来监听端口，但这会产生相同的错误。

4

3 回答 3

5

发现问题。这来自该服务器的 IP 地址更改的简短历史，但 /etc/hosts 文件只是将新的附加到它而不是替换它。我认为这使 Hadoop 启动感到困惑，因为它试图在不存在的界面上打开 50070。“正在使用的端口”的错误使这有点混乱。

于 2015-02-02T20:25:09.493 回答
2

下载osquery https://code.facebook.com/projects/658950180885092

并安装

发出这个命令 osqueryi

出现提示时使用此 sql 命令查看所有正在运行的 java 进程并找到 pid

SELECT name, path, pid FROM processes where name="java";

你会在 Mac 上得到类似这样的东西

  +------+--------------------------------------------------------------------------+-------+
  | name | path                                                                     | pid   |
  +------+--------------------------------------------------------------------------+-------+
  | java | /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java | 59446 |
  | java | /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java | 59584 |
  | java | /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java | 59676 |
  | java | /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java | 59790 |
  +------+--------------------------------------------------------------------------+-------+

对所有进程发出 sudo kill - PID 命令以确保它杀死正在使用的端口 0.0.0.0:50070

然后在所有这些重试 sbin/start-dfs.sh 和 namenode 现在应该显示

于 2015-12-31T15:55:31.427 回答
1

使用以下命令检查正在运行和使用 java 的进程：

ps辅助| grep java

之后，使用上述命令中的 PID 杀死所有与 hadoop 相关的进程，如下所示：

须藤杀 -9 PID

于 2017-06-01T06:51:31.620 回答