hadoop - VirtualBox CentOS 6.4中Accumulo初始化异常

Question

我正在尝试启动 Accumulo，但我遇到了一个严重的异常，该异常似乎与我的虚拟机的某些网络问题有关。我以为命令

sudo -u accumulo /usr/lib/accumulo/bin/accumulo init --instance-name lumify --password password

将初始化累积。但是，我收到一条警告，指出已检测到地址更改，然后是致命异常。我注意到我没有在 accumulo-env.sh 文件中定义 $ACCUMULO_HOME。我还注意到主文件和从文件中唯一的“主”和“从”是一行，上面写着 localhost，而我的 IP 地址则没有。我在这些文件中将 localhost 更改为我的 IP 地址，但同样的问题仍然存在。

我相当确定这是一个 IP 地址问题，但我严格按照说明进行操作。也许这是一个问题，因为我在虚拟机上(即使我使用的是桥接适配器并为我的虚拟机获得了真实的 IP 地址)？

我使用 ifconfig 检查我的 eth0 连接，它仍然显示 192.168.1.232，而我仍然收到消息

Hadoop Filesystem is hdfs://192.168.1.232:8020

Accumulo data dir is /accumulo

Zookeeper server is localhost:2181

然后是警告

Address change detected. Old: localhost.localdomain/192.168.1.232:8020 New: localhost.localdomain/127.0.0.1:8020

和异常(exception)

Failed to check if filesystem is already initialized.

看起来即使没有不同的网络，我的 VM 的 IP 地址与我运行设置时的 IP 地址相同，我在初始化 accumulo 的过程中遇到了这个问题。

有什么建议吗？堆栈跟踪继续

ConnectException: Call from localhost.localdomain/127.0.0.1 to localhost.localdomain:8020 failed on connection exception: Connection refused

如果有帮助，这里是堆栈跟踪:

[root@localhost conf]# sudo -u accumulo /usr/lib/accumulo/bin/accumulo init --instance-name lumify --password password
2014-08-20 17:49:35,488 [util.Initialize] INFO : Hadoop Filesystem is hdfs://192.168.1.232:8020
2014-08-20 17:49:35,490 [util.Initialize] INFO : Accumulo data dir is /accumulo
2014-08-20 17:49:35,490 [util.Initialize] INFO : Zookeeper server is localhost:2181
2014-08-20 17:49:35,490 [util.Initialize] INFO : Checking if Zookeeper is available. If this hangs, then you need to make sure zookeeper is running


Warning!!! Your instance secret is still set to the default, this is not secure. We highly recommend you change it.


You can change the instance secret in accumulo by using:
   bin/accumulo org.apache.accumulo.server.util.ChangeSecret oldPassword newPassword.
You will also need to edit your secret in your configuration file by adding the property instance.secret to your conf/accumulo-site.xml. Without this accumulo will not operate correctly
2014-08-20 17:49:35,915 [ipc.Client] WARN : Address change detected. Old: localhost.localdomain/192.168.1.232:8020 New: localhost.localdomain/127.0.0.1:8020
2014-08-20 17:49:35,923 [util.Initialize] FATAL: java.io.IOException: Failed to check if filesystem already initialized
java.io.IOException: Failed to check if filesystem already initialized
    at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:178)
    at org.apache.accumulo.server.util.Initialize.doInit(Initialize.java:185)
    at org.apache.accumulo.server.util.Initialize.main(Initialize.java:545)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.accumulo.start.Main$1.run(Main.java:103)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.ConnectException: Call From localhost.localdomain/127.0.0.1 to localhost.localdomain:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:782)
    at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:729)
    at org.apache.hadoop.ipc.Client.call(Client.java:1242)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
    at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
    at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:629)
    at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1545)
    at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:820)
    at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1380)
    at org.apache.accumulo.server.util.Initialize.isInitialized(Initialize.java:512)
    at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:163)
    ... 8 more
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
    at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:207)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:528)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:492)
    at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:510)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:604)
    at org.apache.hadoop.ipc.Client$Connection.access$2100(Client.java:252)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1291)
    at org.apache.hadoop.ipc.Client.call(Client.java:1209)
    ... 23 more
Thread "init" died java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.accumulo.start.Main$1.run(Main.java:103)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException: java.io.IOException: Failed to check if filesystem already initialized
    at org.apache.accumulo.server.util.Initialize.main(Initialize.java:549)
    ... 6 more
Caused by: java.io.IOException: Failed to check if filesystem already initialized
    at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:178)
    at org.apache.accumulo.server.util.Initialize.doInit(Initialize.java:185)
    at org.apache.accumulo.server.util.Initialize.main(Initialize.java:545)
    ... 6 more
Caused by: java.net.ConnectException: Call From localhost.localdomain/127.0.0.1 to localhost.localdomain:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:782)
    at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:729)
    at org.apache.hadoop.ipc.Client.call(Client.java:1242)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
    at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
    at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:629)
    at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1545)
    at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:820)
    at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1380)
    at org.apache.accumulo.server.util.Initialize.isInitialized(Initialize.java:512)
    at org.apache.accumulo.server.util.Initialize.checkInit(Initialize.java:163)
    ... 8 more
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
    at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:207)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:528)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:492)
    at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:510)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:604)
    at org.apache.hadoop.ipc.Client$Connection.access$2100(Client.java:252)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1291)
    at org.apache.hadoop.ipc.Client.call(Client.java:1209)
    ... 23 more

Answer 1

您应该验证您的 DNS 和 /etc/hosts 设置是否正确配置并且与您的 masters 和 slaves 文件一致。