Sucwinder Bassi created CASSANDRA-12794:
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Summary: COPY FROM with NULL='' fails when inserting empty row in
primary key
Key: CASSANDRA-12794
URL: https://issues.apache.org/jira/browse/CASSANDRA-12794
Project: Cassandra
Issue Type: Bug
Components: CQL
Environment: Tested using C* 2.1.15
Reporter: Sucwinder Bassi
Using this table:
CREATE TABLE testtab ( a_id text, b_id text, c_id text, d_id text,
order_id uuid, acc_id bigint, bucket bigint, r_id text, ts bigint, PRIMARY
KEY ((a_id, b_id, c_id, d_id), order_id));
insert one row:
INSERT INTO testtab (a_id, b_id , c_id , d_id , order_id, r_id ) VALUES ( '',
'', '', 'a1', 645e7d3c-aef7-4e3c-b834-24b792cf2e55, 'r1');
Use COPY to dump the row to temp.csv:
copy testtab TO 'temp.csv';
Which creates this file:
$ cat temp.csv
,,,a1,645e7d3c-aef7-4e3c-b834-24b792cf2e55,,,r1,
Truncate the testtab table and then use copy from with NULL='' to insert the
row:
cqlsh:sbkeyspace> COPY testtab FROM 'temp.csv' with NULL='';
Using 1 child processes
Starting copy of sbkeyspace.testtab with columns ['a_id', 'b_id', 'c_id',
'd_id', 'order_id', 'acc_id', 'bucket', 'r_id', 'ts'].
Failed to import 1 rows: ParseError - Cannot insert null value for primary key
column 'a_id'. If you want to insert empty strings, consider using the WITH
NULL=<marker> option for COPY., given up without retries
Failed to process 1 rows; failed rows written to import_sbkeyspace_testtab.err
Processed: 1 rows; Rate: 2 rows/s; Avg. rate: 3 rows/s
1 rows imported from 1 files in 0.398 seconds (0 skipped).
It shows 1 rows inserted, but the table is empty:
select * from testtab ;
a_id | b_id | c_id | d_id | order_id | acc_id | bucket | r_id | ts
------+------+------+------+----------+--------+--------+------+----
(0 rows)
The same error is returned even without the with NULL=''. Is it actually
possible for copy from to insert an empty row into the primary key? The insert
command shown above inserts the empty row for the primary key without any
problems.
Is this related to https://issues.apache.org/jira/browse/CASSANDRA-7792?
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