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From "Mich Talebzadeh" <m...@peridale.co.uk>
Subject RE: Loading data containing newlines
Date Wed, 13 Jan 2016 18:33:46 GMT
Thanks Brian.

 

Just to clarify do you use something like below?

 

1.  hdfs dfs -copyFromLocal /var/tmp/t.bcp
hdfs://rhes564.hedat.net:9000/misc/t.bcp

2.  CREATE EXTERNAL TABLE <TABLE> name (col1 INT, col2 string, .) COMMENT
'load from bcp file'ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS
ORC

 

Cheers,

 

 

Dr Mich Talebzadeh

 

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A Winning Strategy: Running the most Critical Financial Data on ASE 15

 
<http://login.sybase.com/files/Product_Overviews/ASE-Winning-Strategy-091908
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http://login.sybase.com/files/Product_Overviews/ASE-Winning-Strategy-091908.
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ISBN 978-0-9563693-0-7. 

co-author "Sybase Transact SQL Guidelines Best Practices", ISBN
978-0-9759693-0-4

Publications due shortly:

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978-0-9563693-3-8

Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume
one out shortly

 

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NOTE: The information in this email is proprietary and confidential. This
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therefore neither Peridale Ltd, its subsidiaries nor their employees accept
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From: Gerber, Bryan W [mailto:Bryan.Gerber@pnnl.gov] 
Sent: 13 January 2016 18:12
To: user@hive.apache.org
Subject: RE: Loading data containing newlines

 

We are pushing the compressed text files into HDFS directory for Hive
EXTERNAL table, then using an INSERT on the table using ORC storage. We are
letting Hive handle the ORC file creation process.

 

From: Mich Talebzadeh [mailto:mich@peridale.co.uk] 
Sent: Tuesday, January 12, 2016 4:41 PM
To: user@hive.apache.org <mailto:user@hive.apache.org> 
Subject: RE: Loading data containing newlines

 

Hi Bryan,

 

As a matter of interest are you loading text files into local directories in
encrypted format at all and then push it into HDFS/Hive as ORC?

 

Thanks

 

 

Dr Mich Talebzadeh

 

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V8Pw

 

Sybase ASE 15 Gold Medal Award 2008

A Winning Strategy: Running the most Critical Financial Data on ASE 15

 
<http://login.sybase.com/files/Product_Overviews/ASE-Winning-Strategy-091908
.pdf>
http://login.sybase.com/files/Product_Overviews/ASE-Winning-Strategy-091908.
pdf

Author of the books "A Practitioner's Guide to Upgrading to Sybase ASE 15",
ISBN 978-0-9563693-0-7. 

co-author "Sybase Transact SQL Guidelines Best Practices", ISBN
978-0-9759693-0-4

Publications due shortly:

Complex Event Processing in Heterogeneous Environments, ISBN:
978-0-9563693-3-8

Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume
one out shortly

 

 <http://talebzadehmich.wordpress.com/> http://talebzadehmich.wordpress.com

 

NOTE: The information in this email is proprietary and confidential. This
message is for the designated recipient only, if you are not the intended
recipient, you should destroy it immediately. Any information in this
message shall not be understood as given or endorsed by Peridale Technology
Ltd, its subsidiaries or their employees, unless expressly so stated. It is
the responsibility of the recipient to ensure that this email is virus free,
therefore neither Peridale Ltd, its subsidiaries nor their employees accept
any responsibility.

 

From: Gerber, Bryan W [mailto:Bryan.Gerber@pnnl.gov] 
Sent: 12 January 2016 17:41
To: user@hive.apache.org <mailto:user@hive.apache.org> 
Subject: Loading data containing newlines

 

We are attempting to load CSV text files (compressed to bz2) containing
newlines in fields using EXTERNAL tables and INSERT/SELECT into ORC format
tables.  Data volume is ~1TB/day, we are really trying to avoid unpacking
them to condition the data.

 

A few days of research has us ready to implement custom  input/output
formats to handle the ingest.  Any other suggestions that may be less effort
with low impact to load times?

 

Thanks,

Bryan G.


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