# WARN\_CONNECTION\_SPARK\_NO\_GROUP\_WITH\_DETAILS\_READ\_ACCESS: no groups allowed to read connection details[¶](https://doc.dataiku.com/dss/latest/troubleshooting/errors/WARN_CONNECTION_SPARK_NO_GROUP_WITH_DETAILS_READ_ACCESS.html#warn-connection-spark-no-group-with-details-read-access-no-groups-allowed-to-read-connection-details "Permalink to this headline")

Spark is enabled but no user groups have been granted permission to read the connection’s details. Spark interaction may be slow.

## Remediation[¶](https://doc.dataiku.com/dss/latest/troubleshooting/errors/WARN_CONNECTION_SPARK_NO_GROUP_WITH_DETAILS_READ_ACCESS.html#remediation "Permalink to this headline")

Grant “Details readable by” on the connection to the user groups using Spark. See Reading details of a connection for more details.
