722 questions with Azure Event Hubs tags

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How can I increase Event Hubs number in Event Hubs Namespace beyond 10 without going into premium??

Due to architectural requirements, we would need to increase the number of event hubs in a namespace from 10 to 20. Switching to Premium is not being considered due to high cost (x100 in terms of monthly billing). Of course, two Event Hubs is also on the…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-07-10T16:19:21.3833333+00:00
Iñigo Martinez Lasala 0 Reputation points
commented 2025-07-11T18:41:39.6066667+00:00
Venkat Reddy Navari 3,630 Reputation points Microsoft External Staff Moderator
1 answer

Azure Function (Python) with Event Hub trigger: is there a maximum input batch size beyond configuration settings?

I'm using an Azure Function App in Python with an Event Hub trigger and have set cardinality=many to receive events in a batch. For sending to Event Hub, I'm aware there's a hard limit on the batch size (e.g., based on total message size). But for…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-07-04T06:48:49.21+00:00
Wessel Vonk 45 Reputation points
commented 2025-07-09T18:32:38.9+00:00
Venkat Reddy Navari 3,630 Reputation points Microsoft External Staff Moderator
1 answer

Event Hub Trigger in Python Function: limits on total payload despite high batch size?

I'm using an Azure Function in Python with an Event Hub trigger and have configured maxEventBatchSize to a high value (e.g., 3000–5000). I understand that each individual outbound Event Hub Batch has a maximum size of 1 MB. My question is about inbound…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-07-07T08:54:53.7333333+00:00
Wessel Vonk 45 Reputation points
commented 2025-07-09T07:49:45.4533333+00:00
Smaran Thoomu 25,175 Reputation points Microsoft External Staff Moderator
1 answer

Graph Api create subscription returns Status Code: BadRequest; Reason: The value 'https://outlook.office365.com/api/v2.0/Users('Sandbox%40company.com')/Events' of parameter 'Resource' is invalid.]\n\nPOST

In our java springboot app we use dependency https://mvnrepository.com/artifact/com.microsoft.graph/microsoft-graph/5.72.0 When we try to create eventhub subscription for meeting room via that API we are getting…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-27T14:12:45.7933333+00:00
Mikhail 1 Reputation point
answered 2025-07-03T16:11:46.8366667+00:00
Mikhail 1 Reputation point
1 answer

How to get real-time data from a SQL Server running on a Self-Hosted VM?

I have a SQL server running on a VM (which is Self-hosted and not managed by any cloud). Database and table which I want to use have CDC enabled on them. I want to have those tables data into KQL DB as real-time only. No batch or incremental load. I…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-03T08:25:46.22+00:00
Agrawal, Pranjal 0 Reputation points
commented 2025-07-02T10:49:11.0066667+00:00
Smaran Thoomu 25,175 Reputation points Microsoft External Staff Moderator
1 answer

Connecting Microsoft Graph Subscriptions to Azure Event Hub facing time out issues starting today

I am working on a project that passes Graph events through an Azure Event Hub to trigger a function app. The subscriptions had been set up and running for months without issue. Two days ago, I switched my functions over to the isolated model as opposed…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-20T20:45:29.66+00:00
Oak, Ryan 5 Reputation points
commented 2025-07-02T08:47:05.5433333+00:00
Smaran Thoomu 25,175 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Azur Event Hubs - Error "Connection recovery support is terminated." on one partition

Hello, I'm using java to send events on Event Hubs with the client EventHubProducerAsyncClient and everything works fine. For perfomance purpose I tried to switch to the EventHubBufferedProducerClientBuilder and I get an error when eventdata are sent on…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-24T14:20:06.58+00:00
Val LEVI 20 Reputation points
commented 2025-06-27T09:58:39.2066667+00:00
Chandra Boorla 14,685 Reputation points Microsoft External Staff Moderator
1 answer

How to enable batch processing of event hub triggers on python v2 azure functions?

The documentation mentions nothing about this for python v2. And only a single line about "cardinality" for v1. …

Azure Functions
Azure Functions
An Azure service that provides an event-driven serverless compute platform.
5,940 questions
Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2024-11-05T03:17:30.8466667+00:00
ITAdminKema 0 Reputation points
answered 2025-06-23T09:47:51.0266667+00:00
Amira Bedhiafi 34,651 Reputation points Volunteer Moderator
1 answer One of the answers was accepted by the question author.

Event Hub Namespace Disaster Recovery (Geo-recovery)

In Event Hubs disaster recovery, we can establish pairing through geo-recovery, which creates a primary and secondary namespace. After initiating a failover, do I need to manually update the connection string in my application, or make any configuration…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-04T08:10:45.9+00:00
RTG-1064 40 Reputation points
commented 2025-06-05T12:11:12.2733333+00:00
TP 126.3K Reputation points Volunteer Moderator
1 answer One of the answers was accepted by the question author.

We are seeing lot of below mentioned error while consuming event hub

We are getting below error while consuming the event hub. org.apache.kafka.common.KafkaException : Unexpected error from SyncGroup: The request timed out. This issue is seeing very frequently for every region. Below are some respective kafka…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-03T09:03:19.7833333+00:00
Pawan Bajait 20 Reputation points
accepted 2025-06-04T14:49:30.9266667+00:00
Pawan Bajait 20 Reputation points
1 answer

Some data points seem to disappear downstream when using Event hubs

Hi! Let me explain my current setup to you - Setup diagnostic rule in AKS to send log data to a log analytics workspace (LAW) Setup a data export rule from to an event hub Data goes from event hub to ASA (azure stream analytics) And from ASA to…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-06-01T11:18:09.73+00:00
Kulkarni, Yash 0 Reputation points
commented 2025-06-04T14:24:18.7+00:00
Jose Benjamin Solis Nolasco 3,511 Reputation points
1 answer

On Azure Eventhub Can i have a kafka producer and a Eventhub client consumer for the same events ?

I produce events via .net confluent kafka client and send via :9093 kafka endpoint can those events be consumed by a non kafka .net azure eventhub EventProcessorClient? does mapping of headers happen automatically ? from byte array to string ?

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-05-28T10:08:53.28+00:00
Christian Johansen 0 Reputation points
commented 2025-05-29T08:53:34.78+00:00
J N S S Kasyap 4,085 Reputation points Microsoft External Staff Moderator
2 answers

Connecting to MQTT event hubs with a ZLAN8309 Gateway RS485

Hi, wondering if anyone has had experience with connecting a ZLAN8309 gateway that polls RS485 to event hubs MQTT. The device can connect to unsecure and secure ports locally but appears to have a problem with certificates and connection directly into…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-04-28T02:03:56.94+00:00
ChrisScanlon 0 Reputation points
commented 2025-05-13T12:02:03.0166667+00:00
Alex Burlachenko 11,610 Reputation points
1 answer One of the answers was accepted by the question author.

Event Hub: seeing requests but no messages

Hello, We have an Event Hub namespace set up but we can see successful/incoming requests without any messages or throughput. Why is this happening? Thanks. Regards.

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2024-09-24T07:16:37.4933333+00:00
Quattrocchi, Calogero 275 Reputation points
commented 2025-05-12T06:02:45.82+00:00
Sander van de Velde | MVP 36,776 Reputation points MVP Volunteer Moderator
1 answer

Copy data from EventHub to CosmosDB with 408 error

Hi, I need a clarification about this discussion. I have a function with these features (Event Hubs trigger and Cosmos DB output binding). Randomly, I obtain 408 error with the following diagnostic info { "Summary": { …

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
Azure Cosmos DB
Azure Cosmos DB
An Azure NoSQL database service for app development.
1,915 questions
asked 2024-02-16T15:27:48.96+00:00
Francesco Cesareo 56 Reputation points
answered 2025-05-11T18:20:33.2333333+00:00
Nichole soria 0 Reputation points
1 answer One of the answers was accepted by the question author.

Integrate Apache Kafka with Event Hub

Working on POC to integrate confluence Kafka (data exists in topic) with Azure eventhub - query - configuration changes need to done on confluence Kafka end apart from bootstrap changes/ user credential changes

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-04-28T16:08:20.4566667+00:00
satish manukonda 30 Reputation points
commented 2025-05-01T12:06:36.7133333+00:00
satish manukonda 30 Reputation points
0 answers

Azure Eventhub High Request Volume

I have an Event hub that is receiving about 50 requests a minute and I am not sure what from. They aren't messages because the messages and throughput are all normal. I have sent some requests to logs and the Caller_s field is always Resource…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-04-23T15:49:12.17+00:00
Anthony Altieri 0 Reputation points
commented 2025-04-30T10:28:56.4233333+00:00
Singireddi JagadishKumar 0 Reputation points Microsoft External Staff Moderator
1 answer

How to fix We cannot connect to Event Hub partition [0] because the maximum number of allowed receivers per partition in a consumer group has been reached

We cannot connect to Event Hub partition [0] because the maximum number of allowed receivers per partition in a consumer group has been reached. Ensure that other Stream Analytics jobs or Service Bus Explorer are not using the same consumer group. The…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
Azure Stream Analytics
Azure Stream Analytics
An Azure real-time analytics service designed for mission-critical workloads.
397 questions
asked 2025-02-12T16:07:20.29+00:00
h85824 0 Reputation points
commented 2025-04-29T16:34:32.18+00:00
Sander van de Velde | MVP 36,776 Reputation points MVP Volunteer Moderator
1 answer One of the answers was accepted by the question author.

New receiver with higher epoch of '0' is created hence current receiver with epoch '0' is getting disconnected

Hello, We are receiving the following error whenever new instances of our application are starting up and the partitions need to be rebalanced: "New receiver '2643943a-a143-43ef-ad1d-858bdec9c686' with higher epoch of '0' is created hence current…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-04-28T10:04:58.21+00:00
Sebastian 20 Reputation points
accepted 2025-04-28T13:21:17.46+00:00
Sebastian 20 Reputation points
1 answer

Azure Event Hub Python SDK - is the order of adding events to an EventDataBatch also the order in which the events will be written to the eventhub?

Hi, I would like to use the python EventHubProducerClient to send events in batches to an eventhub while guaranteeing the order of events within their batch. My plan is to create an EventDataBatch first and then add events to it in my desired order. Is…

Azure Event Hubs
Azure Event Hubs
An Azure real-time data ingestion service.
722 questions
asked 2025-04-22T16:32:38.1+00:00
Boomgaard, Guusje 0 Reputation points
edited a comment 2025-04-24T16:05:48.02+00:00
J N S S Kasyap 4,085 Reputation points Microsoft External Staff Moderator