QuakeWang opened a new pull request, #8215:
URL: https://github.com/apache/paimon/pull/8215
### Purpose
`CDCSource.TableManager` kept reader-side table, schema, and table-read
caches in unbounded `HashMap`s. For long-running CDC jobs with table discovery
and schema evolution, these caches can grow with discovered tables and observed
schema ids.
This PR bounds those reader-local caches with small LRU maps, keeps cache
misses reconstructable from `Identifier` and schema id, and avoids changing
split serialization, checkpoint state, or schema event semantics.
### Tests
- `mvn -pl paimon-flink/paimon-flink-cdc
-Dtest=CDCSourceTableManagerTest,CDCSourceSplitReaderTest test`
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