Marcel Kornacker 2013-09-30, 20:33
Jason Altekruse 2013-10-01, 01:09
-Re: [parquet-dev] Will parquet support ETL tools like Hadoop Sqoop
I have not explicitly tested this, but if Parquet has the hive serdes
written for use with Hive, it should be possible to use the HCat
integration to move data using Sqoop.
On Mon, Sep 30, 2013 at 6:09 PM, Jason Altekruse
> DB Tsai,
> I do not have experience with sqoop, but it looks like the process should
> be pretty straightforward. As far as I can see sqoop can only export
> delimited text or SequenceFile (
> being said, both of these formats are readable by hive and pig. If you do
> not mind doing a two pass conversion you can use sqoop to get your data
> into HDFS in either of the formats and then use hive or pig to read them
> and re-export into parquet. Depending on your cluster setup and use case I
> would look at the various encodings and compressions offered in parquet, as
> these will need to be chosen when you write the files. In most cases
> compression will save you time reading the data.
> Jason Altekruse
> On Mon, Sep 30, 2013 at 3:33 PM, Marcel Kornacker <[EMAIL PROTECTED]
> > Cross-posting to Sqoop dev list.
> > On Mon, Sep 30, 2013 at 12:03 PM, DB Tsai <[EMAIL PROTECTED]> wrote:
> > > Hi parquet developers,
> > >
> > > Is there any way to use ETL tools like hadoop sqoop with parquet
> > > format? If not, how do users dump the data from database to hdfs to do
> > > further analysis now?
> > >
> > > Thanks.
> > >
> > > Sincerely,
> > >
> > > DB Tsai
> > > -----------------------------------
> > > Web: http://www.dbtsai.com
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DB Tsai 2013-10-01, 04:47
Venkat Ranganathan 2013-10-01, 14:05