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From Suraj Nayak <snay...@gmail.com>
Subject Re: Sqoop Netezza Import with Direct options trying to create exteral table in Netezza
Date Sat, 09 May 2015 09:31:02 GMT
Thanks Abraham.

So, once direct sqoop import completes, the external table (which is
created as fifo file) is dropped automatically?

On Fri, May 8, 2015 at 5:30 PM, Abraham Elmahrek <abe@cloudera.com> wrote:

> You should be able to a normal table with the --direct option.
>
> The external table is created as a a fifo file. The file is then put
> directly into Hadoop. This is much faster than transferring on a record by
> record basis.
>
> On Fri, May 8, 2015 at 1:51 PM, Suraj Nayak <snayakm@gmail.com> wrote:
>
> > Thanks Venkat,
> >
> > Two more questions(As am totally not aware of the internals, am
> interested
> > to know the process):
> >
> >    - Just wanted to reconfirm, If the table in netezza is not created as
> >    external table, then can't we use --direct option? Will sqoop try to
> create
> >    a replica of table as external table for transferring data in direct
> mode?
> >    - This external table, which is created by sqoop on --direct option,
> >    is used only to store meta information or all the table data is
> copied into
> >    external table?
> >
> > As my user id don't have write access am using non direct mode to import
> > data now. No issues in getting the data into HDFS from Netezza in this
> case.
> >
> > Thanks!
> >
> > On Fri, May 8, 2015 at 11:40 AM, Venkat Ranganathan <
> > vranganathan@hortonworks.com> wrote:
> >
> >> Yes.   —-direct mode says that Sqoop should use external table to do the
> >> import.   If you don’t want to create external tables, use without
> —direct
> >>
> >> See the Sqoop User document on Netezza support
> >>
> >> Thanks
> >>
> >> Venkat
> >>
> >>
> >>
> >>
> >> On 5/6/15, 5:52 AM, "Suraj Nayak" <snayakm@gmail.com> wrote:
> >>
> >> >Hi Sqoop Users and Developers,
> >> >
> >> >Am trying to run Sqoop import using direct mode on Netezza 7.2 using
> >> Sqoop
> >> >1.4.4 HDP-2.1.2.0.
> >> >
> >> >export HADOOP_CLASSPATH=/path/to/nzjdbc.jar
> >> >
> >> >Sqoop Command : sqoop import -D mapreduce.job.queuename=some_queue
> >> >--connect jdbc:netezza://some.server.com:5480/DB1 --username abcd
> >> >--password xxxxxx --table TABLE_1 --target-dir
> /tmp/NETEZZA_DIRECT_IMPORT
> >> >--direct -m 1
> >> >
> >> >The job never fails and runs endlessly. When I looked into the logs of
> >> >running map task in resource manager, below is what I found:
> >> >
> >> >2015-05-06 07:21:48,159 ERROR [Thread-15]
> >> >org.apache.sqoop.mapreduce.db.netezza.NetezzaJDBCStatementRunner:
> >> >Unable to execute external table export
> >> >org.netezza.error.NzSQLException: ERROR:  CREATE EXTERNAL TABLE:
> >> >permission denied.
> >> >
> >> >       at
> >> org.netezza.internal.QueryExecutor.getNextResult(QueryExecutor.java:279)
> >> >       at
> >> org.netezza.internal.QueryExecutor.execute(QueryExecutor.java:73)
> >> >       at org.netezza.sql.NzConnection.execute(NzConnection.java:2715)
> >> >       at org.netezza.sql.NzStatement._execute(NzStatement.java:849)
> >> >       at
> >>
> org.netezza.sql.NzPreparedStatament.execute(NzPreparedStatament.java:152)
> >> >       at
> >>
> org.apache.sqoop.mapreduce.db.netezza.NetezzaJDBCStatementRunner.run(NetezzaJDBCStatementRunner.java:75)
> >> >
> >> >
> >> >Why is the user trying to create External table? Is this how direct
> >> import
> >> >works? So the user running direct import should have create external
> >> table
> >> >access into Netezza DB?
> >> >
> >> >Any pointers and suggestions are well appreciated!
> >> >
> >> >--
> >> >Thanks
> >> >Suraj Nayak M
> >>
> >
> >
> >
> > --
> > Thanks
> > Suraj Nayak M
> >
>



-- 
Thanks
Suraj Nayak M

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