Blocker Description
Post AVRO-1497, Schema.parse calls LogicalTypes.fromSchemaIgnoreInvalid on any schema that is expressed as a JSON object (anything except bare primitives).
That static method relies on a static cache based on WeakIdentityHashMap (WIHM).
WIHM clearly states that it isn't threadsafe ref
* * Note that this implementation is not synchronized. * </b> */ public class WeakIdentityHashMap<K, V> implements Map<K, V> {
All of the Schema.Parser instances use that same static Schema.parse method.
The end result is that as-is it's only safe to have a single thread parsing schemas in a given JVM.
