question Re: separatorChar setting ignored ? in Archives of Support Questions (Read Only)

separatorChar setting ignored ?

MarcusB — Fri, 16 Sep 2022 09:29:00 GMT

Hi,

I am using the following code to create a csv file as result of a select statement :

CREATE TABLE Tablename
ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde'
WITH SERDEPROPERTIES ("separatorChar" = "\t","quoteChar"="\"","escapeChar"="\\")
STORED AS TEXTFILE
LOCATION '[path]/filename'
AS
SELECT ... ;

I tried to use "separatorChar" = "|" as well, but that seems not to work either.

I always get a result that uses comma as separator. Does anybody see any typo or error in my statement or does anybody know about problems with using the separatorChar setting of the CSV Serde ?

Example line of resulting csv file :

"1","Steven","12345678","2014-08-06","2014-08-06","1.0","0.0","PC","","","","","","","","","",""

Re: separatorChar setting ignored ?

EricL — Sun, 24 May 2015 23:48:26 GMT

This is a reported bug, you can workaround with this issue by breaking statement "CREATE TABLE ... AS SELECT ..." from one step into two steps. 1) Create table first with definitions: CREATE TABLE separator_test ( id int, name string ) ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde' WITH SERDEPROPERTIES ("separatorChar" = "\t","quoteChar"="\"","escapeChar"="\\") STORED AS TEXTFILE; 2) Then insert data into the newly created table: INSERT OVERWRITE TABLE separator_test SELECT * FROM table_name; This will force Hive to by pass the bug and insert data correctly.

Re: separatorChar setting ignored ?

MarcusB — Thu, 28 May 2015 07:40:02 GMT

Small remark : In addition Eric later on gave me the advice to include the CSV Serde, because the statement still didn't run successfully.

This is vital, as this serde is located at Hive standard lib, the "add jar" should not be necessary, but at this point in time seems to be.

So here is that maybe important additional piece of information from Eric who worked on the case I created later after posting my question here at the community :

"ADD JAR /opt/cloudera/parcels/CDH/lib/hive/lib/opencsv-2.3.jar;

Do "ls /opt/cloudera/parcels/CDH/lib/hive/lib/opencsv*" to see whether you have the same version as mine, then try again.

The problem seems to be fixed in 5.4." (remark : my CDH version was 5.3.3)

With adding the serde jar and creating the table before executing insert overwrite table statement, the separatorChar was used and I got the table format I needed.

Re: separatorChar setting ignored ?

cjervis — Thu, 28 May 2015 12:46:28 GMT

Thank you so much for posting the additional solution information MarcusB. It is greatly appreciated.