[BUG] Show better error message when synonyms file is too large

[snikoyo]

Describe the bug

I've tried a large synonyms file (22 MB) in OpenSearch 2.17. I referenced the file in the Dockerfile. The image I used is public.ecr.aws/opensearchproject/opensearch:2.17.0. It throws a generic error multiple times that Lucene could not be loaded:

opensearch | [2025-02-03T09:54:35,819][ERROR][o.o.b.OpenSearchUncaughtExceptionHandler] [opensearch] uncaught exception in thread [main]
opensearch | org.opensearch.bootstrap.StartupException: java.lang.IllegalArgumentException: Could not load codec 'Lucene912'. Did you forget to add lucene-backward-codecs.jar?

I augmented the Java Heap to 8 GB but it didn't help. I couldn't find any documentation about the maximum file size of a synonyms file. There is an old Lucene issue that tested with "huge" file sizes of 44000 lines, generated from WordNet. But that's a rather small size by today's standards.

Related component

No response

To Reproduce

1. Load a large synonyms file via COPY in the Dockerfile
2. Start the docker container

Expected behavior

A clear error message that the file was too large (ideally with the possible maximum file size).

Additional Details

Plugins
None

Host/Environment (please complete the following information):

• OS: Ubuntu
• Version: 2.17