gavinchou commented on code in PR #36728:
URL: https://github.com/apache/doris/pull/36728#discussion_r1694453088
##########
fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java:
##########
@@ -3432,6 +3434,11 @@ public JSONObject toJson() throws IOException {
if (attr == null) {
continue;
}
+ String defaultValue = VariableMgr.getDefaultValue(attr.name());
+ String currentValue = VariableMgr.getValue(this, new
VariableExpr(attr.name(), SetType.SESSION));
+ if (defaultValue != null && defaultValue.equals(currentValue))
{
Review Comment:
If a user explicitly sets a value and it equals the default value, will it
not be persisted? Then after an upgrade, if the default value changes, will the
user's set value be 'changed' to the new one?
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