HPE Ezmeral Data Fabric Event Store C Applications

C applications can be developed for HPE Ezmeral Data Fabric Event Store (as of MapR 5.2.1). The HPE Ezmeral Data Fabric Event Store C Client is a distribution of librdkafka that works with HPE Ezmeral Data Fabric Event Store. The HPE Ezmeral Data Fabric Event Store C Client is available in Ecosystem Pack (MEP) 3.0 or higher.

The following Apache Kafka librdkafka versions are supported:

Table 1. Supported Apache Kafka librdkafka versions
MapR release	MEP Release	Kafka librdkafka version
As of MapR 6.0.1	As of 5.0	0.11.3
As of MapR 5.2.1 through 6.0.0	As of 3.0	0.9.0

The HPE Ezmeral Data Fabric Event Store C Client supports a majority of the librdkafka C APIs plus additional configuration properties that are available only with HPE Ezmeral Data Fabric Event Store. When developing applications for HPE Ezmeral Data Fabric Event Store or migrating Kafka applications to HPE Ezmeral Data Fabric Event Store, see the list of librdkafka APIs Supported by HPE Ezmeral Data Fabric Event Store C Client which also describes API behavior. Reference rdkafka.h for API signatures.

When developing and running HPE Ezmeral Data Fabric Event Store C applications, note the following:

You can create producers and high-level consumers. Low-level consumers are not supported.
Consuming or producing topics in a Kafka cluster is not supported.
As of MapR 6.0, the HPE Ezmeral Data Fabric Event Store offset values start at 0.
MapR Security is supported. Kafka application-level security is not supported. See Security.
User impersonation is not supported.

CAUTION:

As of MapR 6.1, the mapr-core package has a dependency on mapr-librdkafka. If the mapr-librdkafka package is installed, do not remove it manually. Doing so could result in the removal of MapR core packages, rendering the node unusable.