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From Jim Colestock>
Subject RE: Hive 0.11 with Cloudera CHD4.3 MR v1
Date Thu, 22 Aug 2013 12:16:57 GMT
Hello All, 

Sorry for not replying to the thread, but I never received any of your responses..  Hopefully
this info will help: 


Here is the error I'm getting on task tracker for the mapper: 

2013-08-21 15:34:32,491 INFO org.apache.hadoop.mapred.TaskLogsTruncater: Initializing logs'
truncater with mapRetainSize=-1 and reduceRetainSize=-1
2013-08-21 15:34:32,494 WARN org.apache.hadoop.mapred.Child: Error running child
java.lang.RuntimeException: java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.exec.Utilities.getMapRedWork(
	at org.apache.hadoop.mapred.MapTask.runOldMapper(
	at org.apache.hadoop.mapred.Child$
	at Method)
	at org.apache.hadoop.mapred.Child.main(
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.exec.Utilities.getMapRedWork(
	... 11 more
2013-08-21 15:34:32,498 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the task

@Srinivas Surasani
	Hopefully the above helps.. 

@Lars Francke
	Thanks, I'll take a peek at those 2 patches.. But I've just recently pulled down fresh code
and recompiled everything and I'm still getting the above error. 

And for reference, below is my original email to the list..  Thanks all for you help! 


Hello All, 

Has anyone been successful at running hive 0.11 with Cloudera CDH 4.3?   

I've been able to get hive to connect to my metadb (which is in Postgres).  Verified by doing
a show tables..  I can run explain and describes on tables, but when I try to run anything
that fires off an M/R job, I get the following error: 

hive>select count(*) from tableA;
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>
Starting Job = job_201307112247_13816, Tracking URL = http://master:50030/jobdetails.jsp?jobid=job_201307112247_13816
Kill Command = /usr/lib/hadoop/bin/hadoop job  -kill job_201307112247_13816
Hadoop job information for Stage-1: number of mappers: 1; number of reducers: 1
2013-07-12 02:11:42,829 Stage-1 map = 0%,  reduce = 0%
2013-07-12 02:12:08,173 Stage-1 map = 100%,  reduce = 100%
Ended Job = job_201307112247_13816 with errors
Error during job, obtaining debugging information...
Job Tracking URL: http://master:50030/jobdetails.jsp?jobid=job_201307112247_13816
Examining task ID: task_201307112247_13816_m_000002 (and more) from job job_201307112247_13816
Exception in thread "Thread-19" java.lang.NoClassDefFoundError: org/apache/hadoop/mapreduce/util/HostUtil
at org.apache.hadoop.hive.shims.Hadoop23Shims.getTaskAttemptLogUrl(
at org.apache.hadoop.hive.ql.exec.JobDebugger$TaskInfoGrabber.getTaskInfos(
at org.apache.hadoop.hive.ql.exec.JobDebugger$
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.mapreduce.util.HostUtil
at Method)
at java.lang.ClassLoader.loadClass(
at sun.misc.Launcher$AppClassLoader.loadClass(
at java.lang.ClassLoader.loadClass(
... 4 more
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask
MapReduce Jobs Launched:
Job 0: Map: 1  Reduce: 1   HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

I'm using my configs from hive 0.10, which works with no issues and this was pretty much a
drop in replacement on the machine that hadoop 0.10 was running on.. 

I've done a bunch of googling around and have found a bunch of other folks that have have
had the same issue, but no solid answers.. 

Thanks in advance for any help.. 


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