congbobo184 commented on a change in pull request #3876: Add the multi version
schema support
URL: https://github.com/apache/pulsar/pull/3876#discussion_r269873516
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File path:
pulsar-client/src/main/java/org/apache/pulsar/client/impl/PulsarClientImpl.java
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@@ -83,6 +83,7 @@
private final ConnectionPool cnxPool;
private final Timer timer;
private final ExecutorProvider externalExecutorProvider;
+ private Map<String, Schema> supportSchemaVersioningSchemaCache = new
HashMap<>();
Review comment:
I think the topic is the first key, the true avro schema is second key. like
this
```suggestion
private Map<String, ConcurrentHashMap<org.apache.avro.Schema,Schema>>
supportSchemaVersioningSchemaCache = new HashMap<>
```
Because schema by version will create a lot of same reader and writer
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