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Make MetaTableSchemaCache thread-safe #5956

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Make MetaTableSchemaCache thread-safe #5956

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4 changes: 2 additions & 2 deletions ...n/java/software/amazon/awssdk/enhanced/dynamodb/internal/mapper/MetaTableSchemaCache.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,9 @@

package software.amazon.awssdk.enhanced.dynamodb.internal.mapper;

import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import software.amazon.awssdk.annotations.SdkInternalApi;

/**
Expand All @@ -27,7 +27,7 @@
@SdkInternalApi
@SuppressWarnings("unchecked")
public class MetaTableSchemaCache {
private final Map<Class<?>, MetaTableSchema<?>> cacheMap = new HashMap<>();
private final Map<Class<?>, MetaTableSchema<?>> cacheMap = new ConcurrentHashMap<>();

public <T> MetaTableSchema<T> getOrCreate(Class<T> mappedClass) {
return (MetaTableSchema<T>) cacheMap().computeIfAbsent(
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