Docs » Get started with the Splunk Distribution of the OpenTelemetry Collector » Collector components » Batch processor

Batch processor ๐Ÿ”—

The batch processor is an OpenTelemetry Collector component that batches and compresses spans, metrics, or logs based on size or time. Batching can help reduce the number of submission requests made by exporters, and help regulate the flow of telemetry from multiple or single receivers in a pipeline.

Get started ๐Ÿ”—

By default, the Splunk Distribution of OpenTelemetry Collector includes the batch processor in all the predefined pipelines when deployed in host monitoring (agent) or data forwarding (gateway) modes. See Collector deployment modes for more information.

To ensure that batching happens after data sampling and filtering, add the batch processor after the memory_limiter processor and other sampling processors.

Sample configurations ๐Ÿ”—

The Splunk Distribution of OpenTelemetry Collector adds the batch processor with the default configuration:


The following example shows how to configure the batch processor to send batches after 5,000 spans, data points, or logs have been collected. The timeout setting works as a fallback condition in case the size condition isnโ€™t met.

    send_batch_size: 5000
    timeout: 15s

Batching by metadata ๐Ÿ”—

Starting from version 0.78 of the OpenTelemetry Collector, you can batch telemetry based on metadata. For example:

    # batch data by tenant-id
    - tenant_id

    # limit to 10 batcher processes before raising errors
    metadata_cardinality_limit: 10

To use metadata as batching criteria, add the include_metadata: true setting to your receiversโ€™s configuration, so that the batch processor can use the available metadata keys.


Batching by metadata can increase memory consumption, as each metadata combination triggers the allocation of a new background task in the Collector. The maximum number of distinct combinations is defined using the metadata_cardinality_limit setting, which defaults to 1000.

Settings ๐Ÿ”—

The following table shows the configuration options for the batch processor:

Troubleshooting ๐Ÿ”—

If you are a Splunk Observability Cloud customer and are not able to see your data in Splunk Observability Cloud, you can get help in the following ways.

Available to Splunk Observability Cloud customers

Available to prospective customers and free trial users

  • Ask a question and get answers through community support at Splunk Answers .

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To learn about even more support options, see Splunk Customer Success .