crossdc-producer/src/main/java/org/apache/solr/update/processor/MirroringUpdateProcessor.java (3 lines):
	- line 203: // TODO: Can we actually support this considering DBQs aren't versioned.
	- line 248: // TODO: what if this core is not in the targeted collection?
	- line 268: // TODO: We can't/shouldn't support this ?


encryption/src/main/java/org/apache/solr/update/DirectUpdateHandler2Copy.java (3 lines):
	- line 73: //TODO: remove this DirectUpdateHandler2 copy once Solr 9.2 is available.
	- line 655: // TODO: consider soft commit issues
	- line 956: // TODO: keep other commit callbacks from being called?


crossdc-commons/src/main/java/org/apache/solr/crossdc/common/MirroredSolrRequestSerializer.java (2 lines):
	- line 77: updateRequest.add("id", "1"); // TODO huh?
	- line 114: // TODO: add checks


crossdc-consumer/src/main/java/org/apache/solr/crossdc/messageprocessor/SolrMessageProcessor.java (2 lines):
	- line 68: // preventCircularMirroring(mirroredSolrRequest); TODO: isn't this handled by the mirroring handler?
	- line 89: // TODO: isn't this handled by the mirroring handler?


crossdc-consumer/src/main/java/org/apache/solr/crossdc/consumer/KafkaCrossDcConsumer.java (2 lines):
	- line 266: if (e instanceof ClassCastException || e instanceof SerializationException) { // TODO: optional
	- line 287: if (e instanceof ClassCastException || e instanceof SerializationException) { // TODO: optional


crossdc-producer/src/main/java/org/apache/solr/update/processor/KafkaRequestMirroringHandler.java (1 line):
	- line 51: // TODO: Enforce external version constraint for consistent update replication (cross-cluster)


encryption/src/main/java/org/apache/solr/encryption/EncryptionMergePolicy.java (1 line):
	- line 64: //TODO: this does not seem to work correctly under heavy concurrent load.


encryption/src/main/java/org/apache/solr/encryption/EncryptionUpdateHandler.java (1 line):
	- line 35: //TODO: extend DirectUpdateHandler2 once Solr 9.2 is available


encryption/src/main/java/org/apache/solr/encryption/EncryptionRequestHandler.java (1 line):
	- line 315: // TODO: Set maxOptimizeSegments to Integer.MAX_VALUE to trigger EncryptionMergePolicy


encryption/src/main/java/org/apache/solr/encryption/EncryptionDirectoryFactory.java (1 line):
	- line 49: // TODO: Ideally EncryptionDirectoryFactory would extend a DelegatingDirectoryFactory to delegate