01-25-2017 01:46 PM
When you configure Hive, hive-site.xml will be updated with default property. So you can customize hive-site.xml by adding addional property.
Instead of directly updating hive-site.xml, i would recommend you to update via CM. You can follow the below steps
CM -> Hive -> Configuration -> Advanced Category -> search for snippet -> It will show you option to add additional property.
Press + button, Name = "hive.prewarm.enabled" and value to be "true" to enable it
Press ? button, to know more about each property
01-25-2017 02:25 PM
You can try setting it in Hive service's configuration page. Search for 'Hive Service Advanced Configuration Snippet (Safety Valve) for hive-site.xml' and add an entry for this. Then you might probably want to restart Hive service.
01-26-2017 08:16 AM
I've set-up hive.prewarm.enabled=true and it did not improve the slow latency to start and initialize executors.
It still takes about 15seconds to initialize things. Any idea ?