Max block location exceeded for split

今天用sqoop往oracle导数据的时候报了下面的一个错：

14/02/11 09:33:56 ERROR security.UserGroupInformation: PriviledgedActionException as:hadoop (auth:SIMPLE) cause:java.io.IOException: Max block location exceeded for split: Paths:/data/out/g_hour_dstc_net_vsn_cell_zone/4/000004_0:134217728+77776807,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000006_0:134217728+30117885,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000008_0:0+15268400,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000002_0:268435456+6082739,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000006_0:0+134217728,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000007_0:0+49040505 Locations:slave10:slave11:slave1:slave2:slave12:slave3:slave13:slave4:slave5:slave6:slave15:slave9:slave8:slave7:;  splitsize: 14 maxsize: 13
14/02/11 09:33:56 ERROR tool.ExportTool: Encountered IOException running export job: java.io.IOException: Max block location exceeded for split: Paths:/data/out/g_hour_dstc_net_vsn_cell_zone/4/000004_0:134217728+77776807,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000006_0:134217728+30117885,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000008_0:0+15268400,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000002_0:268435456+6082739,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000006_0:0+134217728,/data/out/g_hour_dstc_net_vsn_cell_zone/4/000007_0:0+49040505 Locations:slave10:slave11:slave1:slave2:slave12:slave3:slave13:slave4:slave5:slave6:slave15:slave9:slave8:slave7:;  splitsize: 14 maxsize: 13
14/02/11 09:33:56 WARN hdfs.DFSClient: DataStreamer Exception
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException): No lease on /user/hadoop/.staging/job_1392020200342_1498/job.split: File does not exist. Holder DFSClient_NONMAPREDUCE_1709622554_1 does not have any open files.
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2738)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2544)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2455)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)

	at org.apache.hadoop.ipc.Client.call(Client.java:1347)
	at org.apache.hadoop.ipc.Client.call(Client.java:1300)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
	at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:330)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
	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:1226)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:514)
14/02/11 09:33:56 ERROR hdfs.DFSClient: Failed to close file /user/hadoop/.staging/job_1392020200342_1498/job.split
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException): No lease on /user/hadoop/.staging/job_1392020200342_1498/job.split: File does not exist. Holder DFSClient_NONMAPREDUCE_1709622554_1 does not have any open files.
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2738)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2544)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2455)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)

	at org.apache.hadoop.ipc.Client.call(Client.java:1347)
	at org.apache.hadoop.ipc.Client.call(Client.java:1300)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
	at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:330)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
	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:1226)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:514)

出现上述错误的原因是由于数据块所在的DN超过了设置的最大值，在mapred-site.xml中

        <property>
                <name>mapreduce.job.max.split.locations</name>
                <value></value>
        </property>

把这个值设置成你的ND数就行了。