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Hive, mail # user - no data in external table


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Re: no data in external table
kulkarni.swarnim@...) 2012-10-04, 21:59
> "hbase.columns.mapping" = ":key,mtdt:string,il:string,ol:string"

This doesn't look right. The mapping should be of form
COLUMN_FAMILY:COLUMN_QUALIFIER. In this case it seems to be
COLUMN_FAMILY:TYPE which is not right.

On Thu, Oct 4, 2012 at 3:25 PM, <[EMAIL PROTECTED]> wrote:

> Hi,
>
> In hive shell I did
>
> create external table myextrenaltable (key string, metadata string,
> inlinks string, outlinks string) stored by
> 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
>  with serdeproperties ("hbase.columns.mapping" > ":key,mtdt:string,il:string,ol:string")
>  tblproperties ("hbase.table.name" = "myextrenaltable");
>
> In tasktracker log I do not see anything relevant to hbase. In jobdetails
> page I see a few successful jobs. in hive shell I see
>
> Total MapReduce 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_201210031146_0016, Tracking URL > http://localhost:50030/jobdetails.jsp?jobid=job_201210031146_0016
> Kill Command = /home/dev/hadoop-0.20.2/bin/../bin/hadoop job
> -Dmapred.job.tracker=localhost:9001 -kill job_201210031146_0016
> Hadoop job information for Stage-1: number of mappers: 1; number of
> reducers: 0
> 2012-10-04 13:19:06,581 Stage-1 map = 0%,  reduce = 0%
> 2012-10-04 13:19:12,629 Stage-1 map = 100%,  reduce = 0%
> 2012-10-04 13:19:15,657 Stage-1 map = 100%,  reduce = 100%
> Ended Job = job_201210031146_0016
> MapReduce Jobs Launched:
> Job 0: Map: 1   HDFS Read: 0 HDFS Write: 0 SUCCESS
> Total MapReduce CPU Time Spent: 0 msec
> OK
> Time taken: 17.47 seconds
>
>
>
> Thanks in advance.
> Alex.
>
>  -----Original Message-----
> From: Ted Yu <[EMAIL PROTECTED]>
> To: user <[EMAIL PROTECTED]>
> Sent: Thu, Oct 4, 2012 11:33 am
> Subject: Re: no data in external table
>
>  Can you tell us how you created mapping for the existing table ?
>
> In task log, do you see any connection attempt to HBase ?
>
> Cheers
>
> On Thu, Oct 4, 2012 at 11:30 AM, <[EMAIL PROTECTED]> wrote:
>
>> Hello,
>>
>> I use hive-0.9.0 with hadoop-0.20.2 and hbase -0.92.1. I have created
>> external table, mapping it to an existing table in hbase. When I do "select
>> * from myextrenaltable" it returns no results, although scan in hbase shows
>> data, and I do not see any errors in jobtracker log.
>>
>> Any ideas how to debug this issue.
>>
>> Thanks.
>> Alex.
>>
>
>
--
Swarnim