Bug growth by sprints
- Aleksandr (Unlicensed)
This article describes what “Bug growth by sprints” metric is and how it helps and works
What is “Bug growth by sprints” metric?
Bug Growth shows a number of Fixed defects vs. number of Logged defects for a time frame (month, sprint and so on). This view shows a trend of submitted defects exceeds the trend of defects being fixed - to understand if a team can timely manage the quality debt
Creating a metric
See Custom Metric development for details
Creating a Custom Selection
See Custom Metric development to see how to get to a Custom Selection mode.
Further will be the explanation of the code you should put in the “PerfQL” field
Retrieving of all sprints we need
sprints as (
select
id as id,
name as sprint_name,
start_date as start_date,
finish_date as f_date,
complete_date as c_date
from sprint
where start_date <= now()
)We retrieve data for all sprints except future ones
Example of the output:
Retrieving of bugs data
bugs as (
select
key as item,
created as created,
done_date as d_date,
resolved as rslv_date
from ticket
where
lower(type) in ('bug', 'sub-bug')
)Here we retrieve all bugs related data filtering data in Ticket table by equality condition of type-column to ‘Bug' or 'Sub-bug’
Example of the output:
Data aggregation and grouping
To get required result we need to join the bugs we have to the sprints twice: firstly to get logged bugs, secondly to get fixed bugs. On the first step the date of bug creation must be between sprint start date and sprint finish date. On the second step bug done date must be between sprint start date and sprint finish date. Then we need to count unique values of logged and fixed bugs and group them by sprint name
Full code recap
with
sprints as (
select
id as id,
name as sprint_name,
start_date as start_date,
finish_date as f_date,
complete_date as c_date
from sprint
where start_date <= now()
),
bugs as (
select
key as item,
created as created,
done_date as d_date,
resolved as rslv_date
from ticket
where
lower(type) in ('bug', 'sub-bug')
)
select
sprints.sprint_name,
count(distinct logged.item) as logged_bugs,
count(distinct fixed.item) as fixed_bugs
from sprints
left join bugs logged
on logged.created between sprints.start_date
and
coalesce(sprints.c_date, sprints.f_date)
left join bugs fixed
on fixed.d_date between sprints.start_date
and
coalesce(sprints.c_date, sprints.f_date)
group by sprints.sprint_name
order by sprints.sprint_nameExample of the output: