[jira] [Created] (NIFI-6180) DruidTranquilityController: expose `firehoseGracePeriod` for higher index task throughput

["Endre Kovacs (JIRA)" <ji...@apache.org>]

Endre Kovacs created NIFI-6180:
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             Summary: DruidTranquilityController: expose `firehoseGracePeriod` for higher index task throughput
                 Key: NIFI-6180
                 URL: https://issues.apache.org/jira/browse/NIFI-6180
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Extensions
    Affects Versions: 1.9.1
            Reporter: Endre Kovacs
            Assignee: Endre Kovacs


During integration testing NiFi with Druid, I noticed a constant, overhead in the realtime index tasks: eg.: even if i set the
{code:java}
druid-cs-window-period=PT1M{code}
 the task duration was still at 426726ms (~7 minutes)

5 of that 7 minutes were due to firehose's grace period. 

My suggestion is to expose `druidBeam.firehoseGracePeriod` ([https://github.com/druid-io/tranquility/blob/master/docs/configuration.md#properties]) to the controller service: DruidTranquilityController, and build it into 

[https://github.com/apache/nifi/blob/3696b5bfcf0bd9e12ee4e9472f3413a93c9c0fcd/nifi-nar-bundles/nifi-druid-bundle/nifi-druid-controller-service/src/main/java/org/apache/nifi/controller/druid/DruidTranquilityController.java#L452-L457] the beam config.

Currently this constant takes the default value of 5 minutes, causing a constant overhead on each of the indexing tasks initiated by NiFi, no matter how few/small the workload window.



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