@Ruslan Fialkovsky What is the age of your ambari managed cluster (like 6 monthds old / 1 year old / 2 year old) ? After months of operation on larger clusters, the Ambari Server may begin to accrue a large amount of historical data in the database. This can cause UI performance degradation. In some old clusters we see that there are lots of old "alert_history" (old operational logs) or old alert notification data entries present in the database that causes slowness, As with time these entries grows much on the database. So the DB dump size also grows and the DB queries can respond slow results. We can use the following command to perform some DB cleanup. # ambari-server db-purge-history --cluster-name DataLake --from-date 2018-12-15 Reference: https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.2.0/bk_ambari-administration/content/purging-ambari-server-history.html .
... View more
