junkaixue commented on code in PR #2065:
URL: https://github.com/apache/helix/pull/2065#discussion_r860286211
##########
helix-core/src/main/java/org/apache/helix/task/RuntimeJobDag.java:
##########
@@ -198,11 +198,15 @@ public void generateJobList() {
resetJobListAndDependencyMaps();
computeIndependentNodes();
_readyJobList.addAll(_independentNodes);
- if (_isJobQueue && _readyJobList.size() > 0) {
+ if (_isJobQueue && !_readyJobList.isEmpty()) {
Review Comment:
Not quite sure whether this is just a style change? If we dont change it,
would it cause any problem?
##########
helix-core/src/main/java/org/apache/helix/task/RuntimeJobDag.java:
##########
@@ -198,11 +198,15 @@ public void generateJobList() {
resetJobListAndDependencyMaps();
computeIndependentNodes();
_readyJobList.addAll(_independentNodes);
- if (_isJobQueue && _readyJobList.size() > 0) {
+ if (_isJobQueue && !_readyJobList.isEmpty()) {
// For job queue, only get number of parallel jobs to run in the ready
list.
for (int i = 1; i < _numParallelJobs; i++) {
- if (_parentsToChildren.containsKey(_readyJobList.peekLast())) {
-
_readyJobList.offer(_parentsToChildren.get(_readyJobList.peekLast()).iterator().next());
+ String parent = _readyJobList.peekLast();
+ Set<String> children = _parentsToChildren.get(parent);
+ if (children != null) {
+ _readyJobList.offer(children.iterator().next());
+ } else {
+ break;
Review Comment:
NIT: it would be better make it as:
if (children == null) {
break;
}
_readyJobList.offer(children.iterator().next());
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