Wallace Baggaley created CASSANDRA-15503:
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Summary: Slow query log indicates opposite LTE when GTE operator
Key: CASSANDRA-15503
URL: https://issues.apache.org/jira/browse/CASSANDRA-15503
Project: Cassandra
Issue Type: Bug
Components: Legacy/Observability
Reporter: Wallace Baggaley
Slow query log is indicating a '<=' when a ">=" operator was sent. This appears
to be a logging only issue, but it threw off development for a day figuring
this out. Please fix.
How to reproduce. Set slow query log timeout to 1 millisecond.
In cqlsh run
{noformat}
CREATE TABLE atable (
.id text,
timestamp timestamp,
PRIMARY KEY ((id), timestamp)
) WITH CLUSTERING ORDER BY (timestamp DESC);
insert into atable (id, timestamp) VALUES ( '1',1);
insert into atable (id, timestamp) VALUES ( '2',2);
insert into atable (id, timestamp) VALUES ( '3',3);
insert into atable (id, timestamp) VALUES ( '4',4);
insert into atable (id, timestamp) VALUES ( '5',5);
insert into atable (id, timestamp) VALUES ( '6',6);
insert into atable (id, timestamp) VALUES ( '7',7);
insert into atable (id, timestamp) VALUES ( '8',8);
insert into atable (id, timestamp) VALUES ( '9',9);
insert into atable (id, timestamp) VALUES ( '10',10);
insert into atable (id, timestamp) VALUES ( '11',11);
select * from atable where timestamp >= '1970-01-01 00:00:00.006+0000' allow
filtering;
{noformat}
In the logs it prints:
{noformat}
DEBUG 1 operations were slow in the last 5003 msecs:
<SELECT * FROM ks.atable WHERE timestamp <= 1970-01-01 00:00Z LIMIT 100>, time
7 msec - slow timeout 1 msec
{noformat}
But the query works appropriately and returns
{noformat}
id | timestamp
----+---------------------------------
6 | 1970-01-01 00:00:00.006000+0000
7 | 1970-01-01 00:00:00.007000+0000
9 | 1970-01-01 00:00:00.009000+0000
10 | 1970-01-01 00:00:00.010000+0000
8 | 1970-01-01 00:00:00.008000+0000
11 | 1970-01-01 00:00:00.011000+0000
(6 rows)
{noformat}
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