hive 运行select count(*) from xx 出错

出错信息：

Total MapReduce jobs = 1 Launching Job 1 out of 1 Number of reduce tasks determined at compile time: 1 In order to change the average load for a reducer (in bytes):   set hive.exec.reducers.bytes.per.reducer=<number> In order to limit the maximum number of reducers:   set hive.exec.reducers.max=<number> In order to set a constant number of reducers:   set mapred.reduce.tasks=<number> 15/01/23 14:42:11 INFO Configuration.deprecation: mapred.job.name is deprecated. Instead, use mapreduce.job.name 15/01/23 14:42:11 INFO Configuration.deprecation: mapred.system.dir is deprecated. Instead, use mapreduce.jobtracker.system.dir 15/01/23 14:42:11 INFO Configuration.deprecation: mapred.local.dir is deprecated. Instead, use mapreduce.cluster.local.dir WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hadoop.log.metrics.EventCounter in all the log4j.properties files. Execution log at: /tmp/root/root_20150123144242_446444a6-1bf4-447a-8740-844ef924eb43.log SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/root/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/root/hive/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] Job running in-process (local Hadoop) Hadoop job information for null: number of mappers: 1; number of reducers: 1 2015-01-23 14:42:46,133 null map = 0%,  reduce = 0% 2015-01-23 14:43:35,007 null map = 100%,  reduce = 0% 2015-01-23 14:43:36,285 null map = 0%,  reduce = 0% 2015-01-23 14:44:04,475 null map = 100%,  reduce = 100% Ended Job = job_1421996717736_0001 with errors Error during job, obtaining debugging information... Examining task ID: task_1421996717736_0001_m_000000 (and more) from job job_1421996717736_0001 Exception in thread "Thread-17" java.lang.IllegalArgumentException: Does not contain a valid host:port authority: local         at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:211)         at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:163)         at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:152)         at org.apache.hadoop.hive.ql.exec.JobTrackerURLResolver.getURL(JobTrackerURLResolver.java:42)         at org.apache.hadoop.hive.ql.exec.JobDebugger.showJobFailDebugInfo(JobDebugger.java:209)         at org.apache.hadoop.hive.ql.exec.JobDebugger.run(JobDebugger.java:92)         at java.lang.Thread.run(Thread.java:745) Execution failed with exit status: 2 Obtaining error information Task failed! Task ID:   Stage-1 Logs: /tmp/root/hive.log FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask

select * from xx; 运行正常
select count(*) from xx;运行出错

请问，有遇到过这个问题吗？

检查mapreduce启动没有同时检查hive中的mapreduce配置，哪里用到了host：port，检查host：port的连通性。

hive中

 select * from tables
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是不走mapreduce的。
加上count就不一样了，所以楼主还是从安装配置入手解决问题。
例如：
注意：
hive.aux.jars.path切忌配置正确

<property>
  <name>hive.aux.jars.path</name>
  <value>file:///usr/hive/lib/hive-hbase-handler-0.13.0-SNAPSHOT.jar,file:///usr/hive/lib/protobuf-java-2.5.0.jar,file:///usr/hive/lib/hbase-client-0.96.0-hadoop2.jar,file:///usr/hive/lib/hbase-common-0.96.0-hadoop2.jar,file:///usr/hive/lib/zookeeper-3.4.5.jar,file:///usr/hive/lib/guava-11.0.2.jar</value>
</property>
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更多参考：
hbase0.96与hive0.12整合高可靠文档及问题总结

最近报了一个相同的错，先试试吧