The number of unused projections is not displayed
yamakawa
Vertica Customer ✭
Hi.
The number of unused projections is not displayed at Management Console.
Home -> Databases and Clusters -> MyDB -> Activity Table Utilization
Right pane - Projections Summary
For items other than unused projections, the values are displayed.
Once I restarted the MC, the situation did not change.
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Answers
The count of unused projections comes from a Work Load Analyzer Rule. That rule has several parameters that are used in its underlying query.
You can display the parameters like so:
You can change the parameter values if you'd like.
In fact, it's planned that in Vertica 10.1 we're lowering the defaults for this WLA rule to more appropriate values per client feedback. Plus, it's also planned that you will be able to tune WLA rule parameters from within MC.
@Jim_Knicely
Thank you for your answer.
I ran the query you gave as an example, and the settings were left at their default values.
Is there any way I can use the query to get the unused projections if they do not show up on ManagementConsole?
To see which projections were loaded but not queried try this:
Last time a projection was loaded and queried:
@mosheg
Thank you for your answer.
Unused projections could be checked.
The question that remains is why the numbers are not displayed in the browser.
I can see the unused projections in the individual tables, but not in the "Projections Summary".
You can see them in MC in the development environment, which is accessible from the same terminal. I do not know the cause of the difference.