Question

我正在使用CDH 5.9，在执行以下配置单元查询时，它会抛出错误。有关这个问题的任何想法？对于普通的选择查询，它的工作正常，但对于复杂的查询，它会导致失败。

hive> select * from table where dt='22-01-2017' and field like '%xyz%' limit 10;
Query ID = hdfs_20170123200303_44a9c423-4bb3-4f80-ade4-b1312971eb63
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_201701131637_0067, Tracking URL = http://cdhum03.temp-dsc-updates.bms.bz:50030/jobdetails.jsp?jobid=job_201701131637_0067
Kill Command = /usr/lib/hadoop/bin/hadoop job  -kill job_201701131637_0067
Hadoop job information for Stage-1: number of mappers: 6; number of reducers: 0
2017-01-23 20:05:46,563 Stage-1 map = 100%,  reduce = 100%
Ended Job = job_201701131637_0067 with errors
Error during job, obtaining debugging information...
Job Tracking URL: http://cdhum03.temp-dsc-updates.bms.bz:50030/jobdetails.jsp?jobid=job_201701131637_0067
Examining task ID: task_201701131637_0067_m_000007 (and more) from job job_201701131637_0067
Examining task ID: task_201701131637_0067_r_000000 (and more) from job job_201701131637_0067

Task with the most failures(4):
-----
Task ID:
  task_201701131637_0067_m_000006

URL:
  http://cdhum03.temp-dsc-updates.bms.bz:50030/taskdetails.jsp?jobid=job_201701131637_0067&tipid=task_201701131637_0067_m_000006
-----
Diagnostic Messages for this Task:
java.lang.Throwable: Child Error
    at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:250)
Caused by: java.io.IOException: Task process exit with nonzero status of 126.
    at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:237)


FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
MapReduce Jobs Launched:
Stage-Stage-1: Map: 6   HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

感谢。

Answer 1

请检查您的数据大小，因为您的作业需要更多的日志空间，但jvm较少请请扩展您的群集或使用特定查询 - 从表中选择*，其中dt = '22 -01-2017'，字段如'％xyz％'限制10 ，因为'％xyz％'将更好地检查整个数据以使用特定要求。删除表并创建一个新的分区表，将日期作为分区列。

Hive错误：java.lang.Throwable：Child Error

1 个答案: