I was using logstash-1.x which processed CSV perfectly.
Now upgraded LS to logstash-2.0.0 and when it process CSV i see repetition of rows. e.g.:
CSV has following columns and values
Col1|Col2|Col3
1|2|3
a|b|c
x|y|z
when logstash-2.0.0 pareses and it prcesses twice resulting query result with duplicate data e.g.
Col1|Col2|Col3
1|2|3
a|b|c
x|y|z
1|2|3
a|b|c
x|y|z
Any idea why? it works fine with LS 1.x.