本文介绍了Hadoop：连接到ResourceManager失败的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
安装hadoop 2.2并尝试启动管道后，示例发生了以下错误（尝试启动 hadoop jar hadoop-mapreduce-examples-2.2.0.jar wordcount someFile后出现同样的错误。 txt / out ）： / usr / local / hadoop $ hadoop pipes -Dhadoop.pipes。 java.recordreader = true -Dhadoop.pipes.java.recordwriter = true -input someFile.txt -output / out -program bin / wordcount
DEPRECATED：不推荐使用此脚本来执行mapred命令。
改为使用mapred命令。
13/12/14 20:12:06信息client.RMProxy：在/0.0.0.0:8032连接到ResourceManager
13/12/14 20:12:06信息客户端。 RMProxy：连接到ResourceManager在/0.0.0.0:8032
13/12/14 20:12:07信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试0次（s）;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:08信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过1次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:09信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过2次（s）;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:10信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过3次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:11信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过4次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:12信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过5次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:13信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过6次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
13/12/14 20:12:14信息ipc.Client：重试连接到服务器：0.0.0.0/0.0.0.0:8032。已经尝试过7次;重试策略是RetryUpToMaximumCountWithFixedSleep（maxRetries = 10，sleepTime = 1 SECONDS）
我的yarn-site.xml：
<配置>
<属性>
< name> yarn.nodemanager.aux-services< / name>
< value> mapreduce_shuffle< /值>
< / property>
<属性>
< name> yarn.nodemanager.aux-services.mapreduce.shuffle.class< / name>
< value> org.apache.hadoop.mapred.ShuffleHandler< / value>
< / property>
< / configuration>
core-site.xml：
<结构>
<属性>
<名称> fs.default.name< /名称>
< value> hdfs：// localhost：9000< / value>
< / property>
< / configuration>
mapred-site.xml：
<结构>
<属性>
< name> mapreduce.framework.name< / name>
<值>纱线< /值>
< / property>
< / configuration>
hdfs-site.xml：
<结构>
<属性>
< name> dfs.replication< / name>
<值> 1< /值>
< / property>
<属性>
<名称> dfs.namenode.name.dir< /名称>
<值>文件：/ home / hduser / mydata / hdfs / namenode< / value>
< / property>
<属性>
< name> dfs.datanode.data.dir< / name>
<值>文件：/ home / hduser / mydata / hdfs / datanode< / value>
< / property>
< / configuration>
我发现我的IPv6已被禁用，因为它应该是。也许我的/ etc / hosts不正确？
/ etc / hosts：
fe00 :: 0 ip6-localnet
ff00 :: 0 ip6-mcastprefix
ff02 :: 1 ip6-allnodes
ff02 :: 2 ip6-allrouters
127.0.0.1 localhost.localdomain localhost hduser
＃自动生成的主机名。请不要删除此评论。
79.98.30.76 356114.s.dedikuoti.lt 356114
:: 1本地主机ip6-localhost ip6-loopback
解决方案
连接recource manager的问题是因为ive需要向yarn-site.xml添加一些属性：
<属性>
< name> yarn.resourcemanager.address< / name>
<值> 127.0.0.1：8032< /值>
< / property>
<属性>
< name> yarn.resourcemanager.scheduler.address< / name>
<值> 127.0.0.1：8030< /值>
< / property>
<属性>
< name> yarn.resourcemanager.resource-tracker.address< / name>
<值> 127.0.0.1：8031< /值>
< / property>
然而，我的工作没有运行，但现在连接成功
After installing hadoop 2.2 and trying to launch pipes example ive got the folowing error (the same error shows up after trying to launch hadoop jar hadoop-mapreduce-examples-2.2.0.jar wordcount someFile.txt /out):
/usr/local/hadoop$ hadoop pipes -Dhadoop.pipes.java.recordreader=true -Dhadoop.pipes.java.recordwriter=true -input someFile.txt -output /out -program bin/wordcount
DEPRECATED: Use of this script to execute mapred command is deprecated.
Instead use the mapred command for it.
13/12/14 20:12:06 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
13/12/14 20:12:06 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
13/12/14 20:12:07 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:08 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:09 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:10 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:11 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:12 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:13 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
13/12/14 20:12:14 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
My yarn-site.xml:
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
<!-- Site specific YARN configuration properties -->
</configuration>
core-site.xml:
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>
mapred-site.xml:
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
hdfs-site.xml:
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/home/hduser/mydata/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/home/hduser/mydata/hdfs/datanode</value>
</property>
</configuration>
Ive figured out that my IPv6 is disabled as it should be. Maybe my /etc/hosts are not correct?
/etc/hosts:
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
127.0.0.1 localhost.localdomain localhost hduser
# Auto-generated hostname. Please do not remove this comment.
79.98.30.76 356114.s.dedikuoti.lt 356114
::1 localhost ip6-localhost ip6-loopback
解决方案
The problem connecting recource manager was because ive needed to add a few properties to yarn-site.xml :
<property>
<name>yarn.resourcemanager.address</name>
<value>127.0.0.1:8032</value>
</property>
<property>
<name>yarn.resourcemanager.scheduler.address</name>
<value>127.0.0.1:8030</value>
</property>
<property>
<name>yarn.resourcemanager.resource-tracker.address</name>
<value>127.0.0.1:8031</value>
</property>
Yet, my Jobs arent runing but connecting is successful now
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