Question

我正在使用sqoop-1.4.6将数据从MSSQL导入hadoop-2.7.1

使用sqoop本身我可以在MSSQL中成功列出表，这意味着它可以正常工作。但是当我尝试导入hadoop时，会出现以下错误消息：

ERROR tool.ImportTool: Encountered IOException running import job: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/libjars/opencsv-2.3.jar could only be replicated to 0 nodes instead of minReplication (=1).  There are 3 datanode(s) running and 3 node(s) are excluded in this operation.
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1550)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3110)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3034)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:723)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)

        at org.apache.hadoop.ipc.Client.call(Client.java:1476)
        at org.apache.hadoop.ipc.Client.call(Client.java:1407)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
        at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:418)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
        at com.sun.proxy.$Proxy10.addBlock(Unknown Source)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1430)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1226)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:449)

所以我检查了datanode的日志文件，它提供了以下信息：

org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to read expected encryption handshake from client. Perhaps the client is running an older version of Hadoop which does not support encryption.

知道如何更改配置或如何处理此问题？

更新

事实证明，在我更改了一些配置文件后，问题就开始了。问题不仅在于sqoop，而且hive也存在同样的问题。

我更改的配置：芯的site.xml

<property>
<name>hadoop.rpc.protection</name>
<value>privacy</value>
</property>

HDFS-site.xml中

<property>
<name>dfs.encrypt.data.transfer</name>
<value>true</value>
</property>

<property>
<name>dfs.encrypt.data.transfer.cipher.suites</name>
<value>AES/CTR/NoPadding</value>
</property>

<property>
<name>dfs.encrypt.data.transfer.cipher.key.bitlength</name>
<value>256</value>
</property>

由于

Answer 1

尝试将dfs.block.access.token.enable设置为true。

与hive和sqoop相关的Hadoop安全配置

1 个答案: