hadoop 名称节点端口正在使用中

Question

这实际上是一个备用 HA 名称节点。它配置了与主服务器相同的设置，并且 hdfs namenode -bootstrapStandby 已成功运行。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 地址端口:

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

但随后我只使用新端口获得与上面相同的结果:

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。

This Question似乎与我的问题相似，但答案没有帮助。我尝试将 dfs.http.address 设置为其他内容，但没有任何改变。我相信这是在 HA 中用 dfs.namenode.http-address.ha-name.namenodename

替换的非 HA 配置选项

从这里可以看出，实际上并没有监听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 用户身份启动以查看监听端口是否存在某种 perms 问题，但会出现相同的错误。

Answer 1

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 文件只是附加了新地址而不是替换了它。我认为这会混淆 Hadoop 启动，因为它试图在一个不存在的界面上打开 50070。 “端口正在使用”的错误让这有点困惑。