XiaoyiPeng opened a new pull request #3534:
URL: https://github.com/apache/rocketmq/pull/3534
**Make sure set the target branch to `develop`**
## What is the purpose of the change
for issue #3533
## Brief changelog
Specify the initialCapacity when initializing a `HashMap `as a local
variable that will not escape,
just like the code in class
`org.apache.rocketmq.broker.filter.MessageEvaluationContext#keyValues` :
```java
public Map<String, Object> keyValues() {
if (properties == null) {
return null;
}
Map<String, Object> copy = new HashMap<String,
Object>(properties.size(), 1);
for (String key : properties.keySet()) {
copy.put(key, properties.get(key));
}
return copy;
}
```
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