Reamer commented on a change in pull request #4263:
URL: https://github.com/apache/zeppelin/pull/4263#discussion_r793335077
##########
File path: zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
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@@ -279,22 +284,36 @@ public void setDefaultInterpreterGroup(String
defaultInterpreterGroup) {
this.defaultInterpreterGroup = defaultInterpreterGroup;
}
- public Map<String, Object> getNoteParams() {
- return noteParams;
+ public ConcurrentHashMap<String, Object> getNoteParams() {
+ if (noteParams == null) {
+ return new ConcurrentHashMap<>();
+ }
+ return new ConcurrentHashMap<>(noteParams);
Review comment:
Why return a new ConcurrentHashMap?
I don't know if returning an Collections.unmodifiableMap might be a good
approach here.
This [code part
](https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Paragraph.java#L450-L455)
should be the only place where the map is edited from another class. Here qw
could force the class to create a new map to work on and then communicate it to
the Note.
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