abhishekbafna opened a new pull request, #15622:
URL: https://github.com/apache/pinot/pull/15622
Implementation for broker selection for logical tables.
For the logical tables, it adds an entry into brokerResource node under
ideal state which is transitioned to external view node using the logical table
name. The logical table names are unique by design so conflicts are not an
issue.
Broker Selection Scenarios
- Dynamic Broker: The table to broker mapping is updated using data change
handler. The data handler listens to the update on the EV/brokerResource node.
- Controller Based Broker: It uses the broker cache to select random
broker. The broker cache is updated periodically. It periodically fetches data
from `tables/livebrokers` API which computes the live broker mapping using
brokerResource.
- Query Console Requests: Controller `/sql` API computes the broker
instance based on the broker tenant configured.
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