# FAQ - Feature Key location for connectors

**URL:** <https://discuss.aerospike.com/t/faq-feature-key-location-for-connectors/7628>\
**Category:** Connectors\
**Created:** [July 10, 2020, 10:58pm UTC](https://discuss.aerospike.com/t/faq-feature-key-location-for-connectors/7628 "2020-07-10T22:58:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Aerospike\_Knowledge](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/aerospike_knowledge/32/368_2.png) [@Aerospike\_Knowledge](https://discuss.aerospike.com/u/Aerospike_Knowledge)\
**Post date:** [July 10, 2020, 10:58pm UTC](https://discuss.aerospike.com/t/faq-feature-key-location-for-connectors/7628/1 "2020-07-10T22:58:06Z")

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# FAQ - Feature Key location for connectors

## Detail

For Aerospike server features the feature key is located by default in `/etc/aerospike`. Some Aerospike Connectors require a feature key. Where are these keys located?

## Answer

### Kafka - Outbound

This is keyed via the presence of `asdb-change-notification` in the server feature file ([`feature-key-file`](https://www.aerospike.com/docs/reference/configuration/?show-removed=1#feature-key-file) configuration parameter).

### Kafka - Inbound

The feature key location is specified in the properties file using the `feature-key-file` property.

### JMS - Outbound

This is keyed via the presence of `asdb-change-notification` in the server feature file ([`feature-key-file`](https://www.aerospike.com/docs/reference/configuration/?show-removed=1#feature-key-file) configuration parameter).

### JMS - Inbound

The feature key location is specified in the properties file using the `feature-key-file` property.

### Spark

Spark requires the feature key for the Connector but not for the Aerospike database. In effect the Connector works as both an ‘inbound’ and ‘outbound’ Connector as it can exchange data between Spark and Aerospike in a bi-directional manner. The path to the Connector side feature key is set by `aerospike.featureKey` in the properties file. If there is no path specified, the Connector will try and read the file from HDFS.

### Notes

- The location of the server feature key can be changed by using the server configuration parameter [`feature-key-file`](https://www.aerospike.com/docs/reference/configuration/index.html#feature-key-file)
- The server feature key is read at startup. Addition of new features will require a node restart.

### Keywords

CONNECTOR LICENSE SERVER FEATURE-KEY-FILE

### Timestamp

June 2020