pentaho hadoop文件输入

wf82jlnq  于 2021-06-02  发布在  Hadoop
关注(0)|答案(1)|浏览(392)

我正在尝试使用pentaho kettle(版本6.0.1.0-386)从独立的hadoop(版本2.7.2,默认配置qith属性)hdfs检索数据。pentaho和hadoop不在同一台机器上,但我可以从一台访问另一台。
我创建了具有以下属性的新“hadoop文件输入”:
需要环境文件/文件夹通配符包括文件的子文件夹url n
文件的url是这样构建的:${protocol}://${user}:${password}@${ip}:${port}${path\u to\u file}
如:hdfs://hadoop:@the_ip:50010/user/hadoop/red\u libelium/ikusi/libelium\u waspmote\u ac\u 2\u libelium\u waspmote/libelium\u waspmote\u ac\u 2\u libelium\u waspmote.txt
密码为空
我检查了,这个文件存在于hdfs中,并通过webmannager和haddop命令行正确下载。
场景a)当我使用${protocol}=hdfs和${port}=50010时,pentaho和hadoop控制台中都出现了错误:
彭塔霍:

SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
2016/04/05 15:23:46 - FileInputList - ERROR (version 6.0.1.0-386, build 1 from 2015-12-03 11.37.25 by buildguy) : org.apache.commons.vfs2.FileSystemEx
ception: Could not list the contents of folder "hdfs://hadoop@172.21.0.35:50010/user/hadoop/red_libelium/Ikusi/libelium_waspmote_AC_2_libelium_waspmot
e/libelium_waspmote_AC_2_libelium_waspmote.txt".
2016/04/05 15:23:46 - FileInputList -   at org.apache.commons.vfs2.provider.AbstractFileObject.getChildren(AbstractFileObject.java:1193)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.di.core.fileinput.FileInputList.createFileList(FileInputList.java:243)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.di.core.fileinput.FileInputList.createFileList(FileInputList.java:142)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.di.trans.steps.textfileinput.TextFileInputMeta.getTextFileList(TextFileInputMeta.java:1580)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.di.trans.steps.textfileinput.TextFileInput.init(TextFileInput.java:1513)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.di.trans.step.StepInitThread.run(StepInitThread.java:69)
2016/04/05 15:23:46 - FileInputList -   at java.lang.Thread.run(Thread.java:745)
2016/04/05 15:23:46 - FileInputList - Caused by: java.io.EOFException: End of File Exception between local host is: "EI001115/192.168.231.248"; destin
ation host is: "172.21.0.35":50010; : java.io.EOFException; For more details see:  http://wiki.apache.org/hadoop/EOFException
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
2016/04/05 15:23:46 - FileInputList -   at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.ipc.Client.call(Client.java:1472)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.ipc.Client.call(Client.java:1399)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
2016/04/05 15:23:46 - FileInputList -   at com.sun.proxy.$Proxy70.getListing(Unknown Source)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getListing(ClientNamenodeProtocolTrans
latorPB.java:554)
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
2016/04/05 15:23:46 - FileInputList -   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2016/04/05 15:23:46 - FileInputList -   at java.lang.reflect.Method.invoke(Method.java:606)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
2016/04/05 15:23:46 - FileInputList -   at com.sun.proxy.$Proxy71.getListing(Unknown Source)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1969)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1952)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:693)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:105)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:755)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:751)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:751)
2016/04/05 15:23:46 - FileInputList -   at com.pentaho.big.data.bundles.impl.shim.hdfs.HadoopFileSystemImpl$9.call(HadoopFileSystemImpl.java:126)
2016/04/05 15:23:46 - FileInputList -   at com.pentaho.big.data.bundles.impl.shim.hdfs.HadoopFileSystemImpl$9.call(HadoopFileSystemImpl.java:124)
2016/04/05 15:23:46 - FileInputList -   at com.pentaho.big.data.bundles.impl.shim.hdfs.HadoopFileSystemImpl.callAndWrapExceptions(HadoopFileSystemImpl
.java:200)
2016/04/05 15:23:46 - FileInputList -   at com.pentaho.big.data.bundles.impl.shim.hdfs.HadoopFileSystemImpl.listStatus(HadoopFileSystemImpl.java:124)
2016/04/05 15:23:46 - FileInputList -   at org.pentaho.big.data.impl.vfs.hdfs.HDFSFileObject.doListChildren(HDFSFileObject.java:115)
2016/04/05 15:23:46 - FileInputList -   at org.apache.commons.vfs2.provider.AbstractFileObject.getChildren(AbstractFileObject.java:1184)
2016/04/05 15:23:46 - FileInputList -   ... 6 more
2016/04/05 15:23:46 - FileInputList - Caused by: java.io.EOFException
2016/04/05 15:23:46 - FileInputList -   at java.io.DataInputStream.readInt(DataInputStream.java:392)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse(Client.java:1071)
2016/04/05 15:23:46 - FileInputList -   at org.apache.hadoop.ipc.Client$Connection.run(Client.java:966)
2016/04/05 15:23:48 - cfgbuilder - Warning: The configuration parameter [org] is not supported by the default configuration builder for scheme: sftp

hadoop:

2016-04-05 14:22:56,045 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: fiware-hadoop:50010:DataXceiver error processing unknown operation  src: /192.168.231.248:62961 dst: /172.21.0.35:50010
java.io.IOException: Version Mismatch (Expected: 28, Received: 26738 )
        at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.readOp(Receiver.java:60)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:229)
        at java.lang.Thread.run(Thread.java:745)

场景其他)在其他情况下使用不同的por号码(500709000…)我只是从pentaho得到了一个错误,hadoop standalone似乎没有收到任何请求。
阅读一些pentaho的文档,似乎大数据插件是由HadoopV2.2.x构建的,因为我正在尝试连接到2.7.2。它能成为问题的根源吗?有没有更高版本的插件?我的hdfs文件的url是错误的吗?
谢谢大家抽出时间,任何提示都将不胜欢迎。

yks3o0rb

yks3o0rb1#

我将自己回答这个问题,因为我解决了这个问题,它太大,一个简单的评论。
通过对hadoop配置进行一些更改,解决了这个问题。
我更改了core-site.xml中的配置
发件人:

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

收件人:

<property>
    <name>fs.default.name</name>
    <value>hdfs://server_ip_address:8020</value>
</property>

由于端口9000有问题,我最终改为端口8020(相关问题)。
打开端口8020(以防有防火墙规则)
pentaho Ketter转换url将类似:${protocol}://${user}:${password}@${host}:${port}${file\u path}现在${port}将是8020。
这样我就可以通过pentaho转换预览来自hdfs的数据。
谢谢大家抽出时间。

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