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Hive, mail # user - Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask MapReduce Jobs Launched:


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RE: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask MapReduce Jobs Launched:
yogesh.kumar13@... 2012-07-24, 09:04
Thanks Nitin :-),

I ensure the cluster health,

hadoop dfsadmin -report,

mediaadmins-iMac-2:~ mediaadmin$ hadoop dfsadmin -report
Configured Capacity: 499763888128 (465.44 GB)
Present Capacity: 51694825472 (48.14 GB)
DFS Remaining: 49239232512 (45.86 GB)
DFS Used: 2455592960 (2.29 GB)
DFS Used%: 4.75%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 1 (1 total, 0 dead)

Name: 127.0.0.1:50010
Decommission Status : Normal
Configured Capacity: 499763888128 (465.44 GB)
DFS Used: 2455592960 (2.29 GB)
Non DFS Used: 448069062656 (417.3 GB)
DFS Remaining: 49239232512(45.86 GB)
DFS Used%: 0.49%
DFS Remaining%: 9.85%
Last contact: Tue Jul 24 14:27:05 GMT+05:30 2012
Also If I go for map-reduce jobs like.

Select Name, Grade from Result where RollNo = 325;
it runs map-reduce and gives proper result.

Here I am using Mac O.S, Please suggest me is that error is still because of proxy authentication, if it is so then how to come out of it.

Thanks & regards
Yogesh Kumar

________________________________________
From: Nitin Pawar [[EMAIL PROTECTED]]
Sent: Tuesday, July 24, 2012 2:13 PM
To: [EMAIL PROTECTED]
Subject: Re: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask MapReduce Jobs Launched:

yogesh,
is your network setup with proxy authentication? normally the error
which you are getting is, when a node tries to connect to another node
but then after some time, the connection needs to be reauthorized.

when you do a select * from table, it does not launch a MR, it just
does a dfs -cat of the hdfs file

you will need to check the cluster health of your hadoop cluster. Also
make sure that on all the nodes the default linux security is off
(iptables )

On Tue, Jul 24, 2012 at 2:09 PM,  <[EMAIL PROTECTED]> wrote:
> Thanks Mohammad :-),
>
> I didn't get regarding which proxy settings Please explain it,
>
> If i do operations like.
> select * from dummysite,
> or
> select * from dummysite where id=10;
>
> such command shows proper result and doesn't through any error.
>
> Please suggest.
>
> Regards
> Yogesh Kumar
> ________________________________________
> From: Mohammad Tariq [[EMAIL PROTECTED]]
> Sent: Tuesday, July 24, 2012 2:00 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask MapReduce Jobs Launched:
>
> Hello Yogesh,
>
>         Are any proxy settings involved??Error code 407 indicates that
> the client must first authenticate itself with the proxy in order to
> proceed further. Just make sure everything is in place.
>
> Regards,
>     Mohammad Tariq
>
>
> On Tue, Jul 24, 2012 at 1:55 PM,  <[EMAIL PROTECTED]> wrote:
>> Hi All,
>>
>> even If if perform count(*) operation on table it shows error,
>>
>> select count(*) from dummysite;
>>
>>
>> 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_201207231123_0011, Tracking URL >> http://localhost:50030/jobdetails.jsp?jobid=job_201207231123_0011
>> Kill Command = /HADOOP/hadoop-0.20.2/bin/../bin/hadoop job
>> -Dmapred.job.tracker=localhost:9001 -kill job_201207231123_0011
>> Hadoop job information for Stage-1: number of mappers: 1; number of
>> reducers: 1
>> 2012-07-24 13:38:18,928 Stage-1 map = 0%,  reduce = 0%
>> 2012-07-24 13:38:21,938 Stage-1 map = 100%,  reduce = 0%
>> 2012-07-24 13:39:22,170 Stage-1 map = 100%,  reduce = 0%
>> 2012-07-24 13:39:25,181 Stage-1 map = 100%,  reduce = 100%
>> Ended Job = job_201207231123_0011 with errors
>> Error during job, obtaining debugging information...

Nitin Pawar

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