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Sqoop >> mail # user >> CLOB data not imported into HBase from Oracle


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Re: CLOB data not imported into HBase from Oracle
Hi Michal,
version 1.3.0 is quite old release (and CDH3 is not supported anymore), therefore I would strongly suggest you to upgrade to the latest release that can be downloaded from [1].

Jarcec

Links:
1: http://www.apache.org/dyn/closer.cgi/sqoop/1.4.3

On Wed, Jun 12, 2013 at 11:11:49PM +0200, Michal Taborsky wrote:
> Hello,
>
> I am running Sqoop 1.3.0-cdh3u4, as part of the Cloudera CDH.
>
> I am trying to get data from Oracle 11gR2 to HBase. The import works, but
> CLOB columns are not making it into HBase.
>
> My simplest testcase:
>
> In Oracle:
> CREATE TABLE TABLE1 ( NUMCOL NUMBER, STRCOL VARCHAR2(20 BYTE), CLOBCOL CLOB
> );
> INSERT INTO TABLE1 (NUMCOL, STRCOL, CLOBCOL) VALUES (1, 'strval',
> 'clobval');
>
> The sqoop command I run is following (the connect parameter is shortened,
> but works):
>
> sqoop import --connect="jdbc:oracle:thin:..." --table TABLE1 --hbase-table
> table1 --hbase-create-table --hbase-row-key NUMCOL --column-family d -m 1
>
> The job runs OK, the only surprising is the second to last line:
> 13/06/12 23:00:06 INFO mapreduce.ImportJobBase: Transferred 0 bytes in
> 7.3188 seconds (0 bytes/sec)
> 13/06/12 23:00:06 INFO mapreduce.ImportJobBase: Retrieved 1 records.
>
> Anyway, after looking at the table in HBase:
>
> # hbase shell
> Version 0.90.6-cdh3u4, r, Mon May  7 13:14:00 PDT 2012
>
> hbase(main):001:0> scan 'table1'
> ROW                            COLUMN+CELL
>  1                             column=d:STRCOL, timestamp=1371070804479,
> value=strval
> 1 row(s) in 0.6070 seconds
>
> The CLOBCOL is not there. The CLOB handling in sqoop must work in general,
> because when I import the same table into Hive or just text file, the clob
> data is there. The problem exists only when importing into HBase. I tried
> searching Sqoop Jira and the internets at large, but could not find any
> mention of CLOBs not getting into HBase.
>
> Thank you for your help,
> Michal Taborsky