Question

当我尝试查询时SELECT * FROM A 我获取所有信息，但是当尝试获取存在列名（或连接）的查询时SELECT a FROM A它返回一些异常：

Total MapReduce jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /tmp/hive-merza/hive_2014-06-25_09-12-19_567_6884805431385202274/-mr-10003/3a481893-3b7e-4cb7-bca7-d5ad103e3aa8 could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1920)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:783)
    at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)

Continuing ...
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /tmp/hadoop-merza/mapred/staging/merza/.staging/job_201406250859_0004/libjars/hbase-0.94.16.jar could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1920)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:783)
    at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)

    at org.apache.hadoop.ipc.Client.call(Client.java:1113)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
    at $Proxy12.addBlock(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:85)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)
    at $Proxy12.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3720)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3580)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2600(DFSClient.java:2783)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:3023)
Job Submission failed with exception 'org.apache.hadoop.ipc.RemoteException(java.io.IOException: File /tmp/hadoop-merza/mapred/staging/merza/.staging/job_201406250859_0004/libjars/hbase-0.94.16.jar could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1920)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:783)
    at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)
)'
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MapRedTask

HADOOP 1.2.1

HBASE 0.94.16

HIVE 0.11.0

注意：我的mapred和dfs正在运行。

Answer 1

select * from table 的原因和从表中选择的原因不是因为当你执行select *时，你需要躺在那里的所有数据hdfs因此它不会运行任何M / R作业但是如果选择a，则必须运行m / r作业来剥离多余的列。

因此，问题是您无法在群集上进行M / R作业，这个问题通常是由于空间不足造成的。

请使用

检查群集和已使用的剩余比率的总容量

  hdfs dfsadmin -report

还要检查hdfs-site.xml中的dfs.datanode.du.reserved，如果此值大于剩余容量

寻找解释here

的其他可能原因

Answer 2

解决！必须将一些jar文件添加到env-hive.sh

export HIVE_AUX_JARS_PATH=/.../hbase-***.jar,/.../hbase-handler***.jar,/.../zookeeperp***.jar

最简单的Hive查询不起作用

2 个答案: