what happen id jms consumer got failed??

If a JMS consumer (i.e. a client that consumes messages from a JMS queue or topic) fails, there are a few possible outcomes depending on how the consumer was implemented and how the JMS provider (i.e. the message broker) is configured.

One possible outcome is that the consumer will stop consuming messages from the queue or topic until it is restarted or reconnected. In this case, the messages that were being processed by the consumer when it failed may be lost, unless the JMS provider is configured to store them in a dead letter queue (DLQ) for later consumption.

Another possible outcome is that the JMS provider may detect the consumer failure and automatically reroute the messages that were being processed by the failed consumer to another consumer, if one is available. This can help to ensure that the messages are not lost and are processed in a timely manner.

Overall, the specific outcome of a JMS consumer failure will depend on the implementation of the consumer and the configuration of the JMS provider. It is important to design and implement JMS consumers in a way that is resilient to failures and can recover from them gracefully.