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  1. Cassandra
  2. CASSANDRA-15503

Slow query log indicates opposite LTE when GTE operator

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      Description

      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

      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;
      

      In the logs it prints:

      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
      

      But the query works appropriately and returns

       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)
      

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              • Assignee:
                adelapena Andres de la Peña
                Reporter:
                wally.baggaley@smartrg.com Wallace Baggaley
                Authors:
                Andres de la Peña
                Reviewers:
                Andres de la Peña, Berenguer Blasi
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                Dates

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                  Updated:
                  Resolved:

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