warning: "illegal reflective access operation has occurred" in Base64Helper$DescriptorNameSetter

[rursprung]

Describe the bug
the following message is printed to the log after the node has started an initialised:

{"type": "server", "timestamp": "2022-01-14T15:51:40,430Z", "level": "INFO", "component": "o.o.s.c.ConfigurationRepository", "cluster.name": "test-opensearch", "node.name": "test-opensearch-0", "message": "Node 'test-opensearch-0' initialized", "cluster.uuid": "V-4_N73oSNeqHcQz1_TGPQ", "node.id": "yqbeGcGeRdir3d_mmE_4Dw"  }
{"type": "deprecation", "timestamp": "2022-01-14T15:51:40,777Z", "level": "DEPRECATION", "component": "o.o.d.c.m.IndexNameExpressionResolver", "cluster.name": "test-opensearch", "node.name": "test-opensearch-0", "message": "this request accesses system indices: [.opendistro_security], but in a future major version, direct access to system indices will be prevented by default", "cluster.uuid": "V-4_N73oSNeqHcQz1_TGPQ", "node.id": "yqbeGcGeRdir3d_mmE_4Dw"  }
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.opensearch.security.support.Base64Helper$DescriptorNameSetter (file:/opt/avaloq/opensearch/plugins/opensearch-security/opensearch-security-1.2.3.0.jar) to field java.io.ObjectStreamClass.name
WARNING: Please consider reporting this to the maintainers of org.opensearch.security.support.Base64Helper$DescriptorNameSetter
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

To Reproduce
start a node of opensearch with the opensearch security plugin enabled.
note that i started it as a single-node cluster.

Expected behavior
no such warnings.

Plugins

• opensearch 1.2.3 (not really a plugin, listed for completeness sake)
• opensearch-security 1.2.3.0
• opensearch-prometheus-exporter 1.2.3

Screenshots
n/a

Host/Environment (please complete the following information):

• OS: RedHat UBI 7 as container base image
• running on OpenShift 4 (Kubernetes v1.19)

Additional context
n/a

[rursprung]

i think this has been solved at some point, at least i hadn't seen the error anymore and @cliu123 removed the offending class in fa9cd5b (released with 2.0.0.0), so this ticket can probably be closed by now?