Troubleshoot HSF-0032 uncaptured server error - Enterprise Distributed Application Service

Error message

Please check log on server side that unknown server error happens.

Cause

The provider threw an uncaught exception while processing an HSF request. Because the exception was not handled in business logic, HSF wraps it as a server error and returns HSF-0032 to the consumer.

The following scenarios commonly produce this error:

Scenario	Typical exception
Unhandled runtime exception in the provider method	`NullPointerException`, `ClassCastException`, `IllegalArgumentException`
Serialization or deserialization failure on the server side	`SerializationException`, `ClassNotFoundException`
Dependency failure inside the provider (database timeout, unavailable downstream service)	`TimeoutException`, `ConnectException`

Solution

Check the server-side HSF log to find the original exception stack trace, then fix the root cause.

Open the HSF log on the provider machine: Replace {user.home} with the home directory of the user that runs the application (for example, /home/admin).
```
tail -200 {user.home}/logs/hsf.log
```
Search for the stack trace that corresponds to the failed request:
```
grep -A 30 "ERROR" {user.home}/logs/hsf.log | tail -50
```

Identify the root cause from the stack trace:

Stack trace pattern	Action
`NullPointerException` or similar runtime exception	Fix the provider code to handle the edge case.
Serialization error (`ClassNotFoundException`, `InvalidClassException`)	Verify that request and response objects implement `Serializable` and that the consumer and provider use compatible class versions.
Connection or timeout error from a downstream dependency	Check the health and connectivity of the database, cache, or downstream service.

If no relevant entry appears in hsf.log, check the application log files for additional exception details.
After fixing the issue, restart the provider and verify that the consumer no longer receives HSF-0032.

If the exception stack trace is truncated or missing, capture a thread dump during the next occurrence for more context:

jstack <provider-pid> > /tmp/hsf-0032-thread-dump.log