Technical Tip: How to fix 'PH_DROP_EVENT_FROM_SHARED_BUFFER' error

The main cause for the 'PH_DROP_EVENT_FROM_SHARED_BUFFER' error is Full Queue drops by the Workers.
The steps to follow are below:

Remove the files from the cache - To DO ON SUPER/WORKERS DURING DOWNTIME - Take a snapshot first:

cd /opt/phoenix/cache/<SUPERIP>/phoenix/rest/dataRequest/rule/
rm -f *

mv /opt/phoenix/cache/<SUPERIP> /opt/phoenix/cache/SUPERIP.old

vi /opt/phoenix/config/phoenix_config.txt -> Search for the line 'notification_server_thread_num'.

Now change this from:

notification_server_thread_num=20

To:

notification_server_thread_num=50 -> Search for 'count_distinct_precision'.

Modify the value to the below:

count_distinct_precision=9

Save the configuration and exit the file.

• Restart the following on Super:

killall -9 phMonitor phRuleWorker phRuleMaster

• Restart the following On Worker:

killall -9 phRuleWorker

• Make sure all processes are up and running:

phstatus