Ethanlm commented on a change in pull request #3274:
URL: https://github.com/apache/storm/pull/3274#discussion_r435339674
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File path: storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java
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@@ -814,7 +814,12 @@ private static int numUsedWorkers(SchedulerAssignment
assignment) {
private boolean auditAssignmentChanges(Map<String, Assignment>
existingAssignments,
Map<String, Assignment>
newAssignments) {
- assert existingAssignments != null && newAssignments != null;
+ if (existingAssignments == null) {
Review comment:
Your second point about defensive programming kinda makes sense to me.
For the first point, "no reason to throw unchecked exceptions in a private
method because it is totally in control of the class scope", I don't disagree
with that. But with this assumption/standard, there are changes in this PR that
can be removed too since some of them are also this case, for example,
`if (TopologyStatus.ACTIVE != initStatus && TopologyStatus.INACTIVE !=
initStatus) `.
And I think those places are where we can use `assert`. My understanding of
using `assert` is to detect mistakes developers make during development. Since
we have total control of a private method, we don't expect those `null` or
invalid case to really happen. So we detect those in development, but not in
production.
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