我在带有分区的Hive中创建一个外部表,然后尝试从现有表中填充它,但是,出现以下异常:
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /apps/hive/warehouse/pavel.db/browserdatapart/.hive-staging_hive_2018-12-28_13-22-45_751_6056004898772238481-1/_task_tmp.-ext-10000/cityid=1/_tmp.000001_3 could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1719) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3372) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3296) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:850) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:504) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2351) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2347) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1869) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2347) at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:814) at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:841) at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88) at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:841) at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:133) at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:170) at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:555) ... 18 more Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /apps/hive/warehouse/pavel.db/browserdatapart/.hive-staging_hive_2018-12-28_13-22-45_751_6056004898772238481-1/_task_tmp.-ext-10000/cityid=1/_tmp.000001_3 could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1719) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3372) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3296) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:850) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:504) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2351) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2347) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1869) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2347) at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1554) at org.apache.hadoop.ipc.Client.call(Client.java:1498) at org.apache.hadoop.ipc.Client.call(Client.java:1398) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233) at com.sun.proxy.$Proxy11.addBlock(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:459) 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:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:290) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:202) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:184) at com.sun.proxy.$Proxy12.addBlock(Unknown Source) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1580) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1375) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:
根据互联网的说法,当datanode无法与namenode通信或内存不足时,会发生这些异常,但就我而言,一切都很好。我已经尝试过格式化我的namenode和datanode了。还有什么可能是问题?
https://wiki.apache.org/hadoop/CouldOnlyBeReplicatedTo我也已经读过了。它并没有帮助我。
我在tez上跑步。这有效:
insert into table browserdatapart partition(cityid) select UserAgent,cityid from browserdata limit 100;
除了我提供的例外,这失败了:
insert into table browserdatapart partition(cityid) select UserAgent,cityid from browserdata;
SET hive.exec.max.dynamic.partitions=100000; SET hive.exec.max.dynamic.partitions.pernode=100000;
设置以上参数对我来说解决了。我猜蜂巢无法将数据复制到异常中出现的那些分区,因为存在的数量超过了最大值(224在我的数据集的情况下)。
224