Hi,
In the hbase table I do not see column qualifier, only family.
For testing connection to hbase I also created a table using
CREATE TABLE hbase_table_1(key int, value string)
STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf1:val")
TBLPROPERTIES ("hbase.table.name" = "xyz");
I see xyz table in hbase. then I added a row in hbase using put 'xyz', 'row1',
'cf1', 'abc'
Then in hive I did: select * from hbase_table_1;
No results are returned, but scan xys in hbase returns 1 row.
Thanks.
Alex.
-----Original Message-----
From: kulkarni.swarnim <kulkarni.swar...@gmail.com>
To: user <user@hive.apache.org>
Sent: Thu, Oct 4, 2012 3:00 pm
Subject: Re: no data in external table
> "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, <alx...@aim.com> 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 <yuzhih...@gmail.com>
To: user <user@hive.apache.org>
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, <alx...@aim.com> 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
