Airbyte sync gets stuck if heartbeat stopped

[sumitksynopsys]

Airbyte sync is getting stuck for 3 hours if the heartbeat is stopped
Log says i.a.w.i.HeartbeatTimeoutChaperone(monitor):165 - Source has stopped heart beating

As per the docs https://github.com/airbytehq/airbyte/blob/ee24f8f5c9071baa5100c233c940d7db516094b8/docs/understanding-airbyte/heartbeats.md
We should set file flags heartbeat.failSync to true to make the syncs fail if a missed heartbeat is detected. But we are using OSS and file flags are not available in OSS.

[sumitksynopsys]

Airbyte AI (in slack) Suggested following solution which we tried and not working

`To change file flags values like heartbeat.failSync on a Kubernetes OSS installation of Airbyte, you can configure these settings using the flags.yaml file. Here are the steps to do this:

1. Locate the flags.yaml file: This file is used to configure various settings for Airbyte, including heartbeat and destination timeout configurations.

2. Edit the flags.yaml file: You need to add or modify the entries for heartbeat.failSync and any other flags you want to configure. Here is an example configuration:

   heartbeat:
   failSync: true # Set to true to fail syncs on missed heartbeats, false to allow syncs to continue

Deploy the changes: After editing the flags.yaml file, you need to ensure that these changes are applied to your Kubernetes deployment. This typically involves updating the ConfigMap or Secret that contains the flags.yaml file and then restarting the relevant pods to pick up the new configuration.Here is a more detailed example of how you might update a ConfigMap in Kubernetes:

apiVersion: v1
kind: ConfigMap
metadata:
name: airbyte-flags
data:
flags.yaml: |
heartbeat:
failSync: true
Apply the ConfigMap:

kubectl apply -f path/to/your/configmap.yaml
Then, restart the Airbyte pods to apply the new configuration:

kubectl rollout restart deployment
By following these steps, you should be able to change the heartbeat.failSync and other flag values in your Kubernetes OSS installation of Airbyte.`