Hello all,
We encounter an issue on our Production environment that cannot be reproduced
on Test environment: list<T> (T = double or text) value is randomly
"multiplied" by 2 (i.e. value sent to C*= [a, b, c], value stored in C* = [a,
b, c, a, b, c]).
I know that it sounds weird but we just want to know whether it is a known
issue (found nothing with Google...). We are working on a small dataset to
narrow down issue with log data and maybe create a ticket in for DataStax Java
Driver or Cassandra teams.
Cassandra v2.0.14
DataStax Java Driver v2.1.7.1
OS RHEL6
Prod Cluster topology = 16 nodes over 2 datacenters (RF = 3 per DC)
UAT Cluster topology = 6 nodes on 1 datacenter (RF = 3)
The only difference between Prod and UAT cluster is the multi-datacenter mode
on Prod one.
We do not insert twice the same data on the same column of any specific row.
All inserts/updates are idempotent!
Data table:
CREATE TABLE data (
field1 text,
field2 int,
field3 text,
field4 double,
field5 list<double>, -- randomly having corrupted data, containing [1, 2,
3, 1, 2, 3] instead of [1, 2, 3]
field6 text,
field7 list<text>, -- randomly having corrupted data, containing [a, b,
c, a, b, c] instead of [a, b, c]
PRIMARY KEY ((field1, field2), field3)
) WITH compaction = { 'class' : 'LeveledCompactionStrategy' };
Thanks in advance for your help.
Best regards,
Minh
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