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From "Piotr Grabuszynski (JIRA)" <>
Subject [jira] [Commented] (GEARPUMP-112) DAG chart in dashboard does not show data, when flow is small
Date Fri, 29 Apr 2016 16:36:12 GMT


Piotr Grabuszynski commented on GEARPUMP-112:

Hi, thank you for very quick response,
today I've deployed Gearpump in local mode, and the flow in my app is visible - DAG chart
and all data looks ok.
The deference between my Yarn deployment, and local one is that in Yarn mode I'm using dedicated
zookeeper node, and security constraint (dedicated user).

My application's flow is:
(kafka source)->(processing)->(kafka sink)

kafka source:
        KafkaStorageFactory offsetStorageFactory = new KafkaStorageFactory(KAFKA_ZOOKEEPER_QUORUM,
        KafkaSource kafkaSource = new KafkaSource(KAFKA_TOPIC_IN, KAFKA_ZOOKEEPER_QUORUM,
        Processor sourceProcessor = Processor.source(kafkaSource, taskNumber, "kafkaSource",
appConfig, context.system());</code>

I've added a screen from metric tab.
PS In Yarn mode I can see the messages in input and output kafka topics.

> DAG chart in dashboard does not show data, when flow is small
> -------------------------------------------------------------
>                 Key: GEARPUMP-112
>                 URL:
>             Project: Apache Gearpump
>          Issue Type: Bug
>          Components: Dashboard
>    Affects Versions: 0.8.0
>            Reporter: Piotr Grabuszynski
>         Attachments: gp-flow.jpg, gp-screen-2.jpg, gp-screen-metrics.jpg, gp-screen-overview.jpg
> BUG:
> After deploying application on Apache Gearpump, DAG chart and data near it, shows always
the same value, and lines and nodes on chart doesn't grow if the flow is about 3 requests
/ second.
> 1. Deploy application on Apache Gearpump.
> 2. To input kafka topic send ~3 requests/sec.
> 3. Go to dashboard, choose your app and go to DAG tab.

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