Example:
dbadmin=> SELECT node_name, component, description
dbadmin-> FROM data_collector
dbadmin-> WHERE table_name = 'dc_features_used';
node_name | component | description
--------------------+--------------+--------------------------------
v_test_db_node0001 | FeaturesUsed | Vertica features used recently
(1 row)
dbadmin-> SELECT split_part(feature, '::', 1) feature, COUNT(*) uses, MAX(feature) example
dbadmin-> FROM dc_features_used
dbadmin-> GROUP BY 1
dbadmin-> ORDER BY 1;
feature | uses | example
-------------+------+-------------------------------------------
command | 2109 | command::UPDATE
error | 1572 | error::8537
flextable | 632 | flextable::parse_query::maplookup_rewrite
metafunction | 593 | metafunction::vertica_start_command
opt | 93 | opt::multi_level_agg
udx | 275 | udx::upgrade_model_format()
voption | 1 | voption::BASIC::DISABLE_DEPARSE_CHECK
(7 rows)
Helpful Links:https://www.vertica.com/docs/latest/HTML/Content/Authoring/SQLReferenceManual/SystemTables/MONITOR/DATA_COLLECTOR.htm
https://www.vertica.com/docs/latest/HTML/Content/Authoring/AdministratorsGuide/Monitoring/Vertica/EnablingAndDisablingDataCollector.htm
Have fun!
About the Author
James Knicely
Vertica Field Chief Technologist
I've had the privilege of working with many database technologies in my career. But after being introduced to Vertica in May of 2011 as a client, I was hooked on the new technology after witnessing a query run in milliseconds that had previously ran for hours on the legacy database we had in place. It was then that I knew I wanted to eventually join the Vertica team, and 4 years later I did! I am currently a Vertica evangelist and am ready to help you get on board! Please feel free to reach out to me with any questions you have about Vertica and make sure to follow my Vertica Quick Tips!
