Fetching dashboards using the /rest/api/2/dashboard?maxResults=1000&startAt=0 does not retrieve all dashboards.

Issue Summary

When your instance contains over 99 dashboards, the /rest/api/2/dashboard?maxResults=1000&startAt=0 API endpoint fails to exhibit the complete dashboard collection.

This API endpoint omits one record for every 100 results, leading to an altered display:

• When querying for 100 dashboards, only 99 will be visible.
• Querying for 1000 dashboards results in only 990 being displayed.

Consequently, when dealing with a considerable number of dashboards, a fraction of them may not be retrievable.

This is reproducible on Data Center: yes

Steps to Reproduce

1. Configure more than 1000 dashboards in your Jira environment.
   • An example script that could be used for this:

     #!/bin/bash
     
     # Set your JSESSIONID and atlassian.xsrf.token values here
     JSESSIONID="retrieve_from_browser_session"
     XSRF_TOKEN="retrieve_from_browser_session"
     
     x=1
     while [ $x -le 3500 ]
     do
       dashboardName="Dashboard_$x"  # Unique dashboard name
       curl 'http://jira.ub2.atl:8080/jira971/secure/AddPortalPage.jspa' \
         -H "Cookie: JSESSIONID=$JSESSIONID; atlassian.xsrf.token=$XSRF_TOKEN" \
         --data-raw "portalPageName=$dashboardName&portalPageDescription=&clonePageId=&favourite=true&projectShare=10000&roleShare=&shareValues=%5B%5D&atl_token=$XSRF_TOKEN&add_submit=Add" \
         --compressed
       x=$((x+1))
     done
     

   • Don't use in production instances!
2. Retrieve a list of dashboards using REST API endpoint: /rest/api/2/dashboard?maxResults=1000&startAt=0
3. Store the results in a file, e.g dashboards.json
4. Count the amount of records retrieved using grep.

   grep -c "\"id\"" dashboards.json
   

Expected Results

1000 records will be retrieved.

Actual Results

Only 990 records are retrieved.

Workaround

Retrieve the dashboards from the database instead.

select * from portalpage;