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Posted to commits@cassandra.apache.org by "Jon Haddad (JIRA)" <ji...@apache.org> on 2019/07/02 16:47:00 UTC
[jira] [Updated] (CASSANDRA-15194) per_second can give nonsense
data
[ https://issues.apache.org/jira/browse/CASSANDRA-15194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jon Haddad updated CASSANDRA-15194:
-----------------------------------
Description:
I just noticed this strange output in the coordinator_reads output::
{code}
cqlsh:system_views> select * from coordinator_reads ;
count | keyspace_name | table_name | 99th | max | median | per_second
-------+--------------------+--------------------------------+------+-----+--------+------------
7573 | tlp_stress | keyvalue | 0 | 0 | 0 | 2.2375e-16
6076 | tlp_stress | random_access | 0 | 0 | 0 | 7.4126e-12
390 | tlp_stress | sensor_data_udt | 0 | 0 | 0 | 1.7721e-64
30 | system | local | 0 | 0 | 0 | 0.006406
11 | system_schema | columns | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | indexes | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | tables | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | views | 0 | 0 | 0 | 1.1192e-16
{code}
cc [~cnlwsu]
btw I realize the output is technically correct, but it's not very readable. For practical purposes this should just say 0.
was:
I just noticed this strange output in the coordinator_reads output::
{code}
cqlsh:system_views> select * from coordinator_reads ;
count | keyspace_name | table_name | 99th | max | median | per_second
-------+--------------------+--------------------------------+------+-----+--------+------------
7573 | tlp_stress | keyvalue | 0 | 0 | 0 | 2.2375e-16
6076 | tlp_stress | random_access | 0 | 0 | 0 | 7.4126e-12
390 | tlp_stress | sensor_data_udt | 0 | 0 | 0 | 1.7721e-64
30 | system | local | 0 | 0 | 0 | 0.006406
11 | system_schema | columns | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | indexes | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | tables | 0 | 0 | 0 | 1.1192e-16
11 | system_schema | views | 0 | 0 | 0 | 1.1192e-16
{code}
cc [~cnlwsu]
> per_second can give nonsense data
> ---------------------------------
>
> Key: CASSANDRA-15194
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15194
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/Virtual Tables
> Reporter: Jon Haddad
> Priority: Normal
>
> I just noticed this strange output in the coordinator_reads output::
> {code}
> cqlsh:system_views> select * from coordinator_reads ;
> count | keyspace_name | table_name | 99th | max | median | per_second
> -------+--------------------+--------------------------------+------+-----+--------+------------
> 7573 | tlp_stress | keyvalue | 0 | 0 | 0 | 2.2375e-16
> 6076 | tlp_stress | random_access | 0 | 0 | 0 | 7.4126e-12
> 390 | tlp_stress | sensor_data_udt | 0 | 0 | 0 | 1.7721e-64
> 30 | system | local | 0 | 0 | 0 | 0.006406
> 11 | system_schema | columns | 0 | 0 | 0 | 1.1192e-16
> 11 | system_schema | indexes | 0 | 0 | 0 | 1.1192e-16
> 11 | system_schema | tables | 0 | 0 | 0 | 1.1192e-16
> 11 | system_schema | views | 0 | 0 | 0 | 1.1192e-16
> {code}
> cc [~cnlwsu]
> btw I realize the output is technically correct, but it's not very readable. For practical purposes this should just say 0.
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