4.2 Retention
MDS feature ensures that there is no data loss when there is a disconnection or unable to establish a connection to primary Kafka server and backup Kafka server due to network failure. It stores the unsent data in the MdsPendingRecordsA or MdsPendingRecordsB tables.
| Data | Table Name |
|---|---|
| Unsent data of A-level metrics | MdsPendingRecordsA |
| Unsent data of B, C –level metrics | MdsPendingRecordsB |
MDS sends this unsent data to Kafka server, if connection to Kafka reestablishes before the expiry of retention period there is No Retention option available in the GUI which disables data retention in case of send failure.
Following are the steps to configure retention time from NOAM GUI:
- From the Main Menu, select Measurement Streaming.
- Select Stream Options click DSR Properties .
- Select the Maximum retention time and click Apply.