sashidhar commented on a change in pull request #7764: #7316 Use
Map.putIfAbsent() instead of containsKey() + put()
URL: https://github.com/apache/incubator-druid/pull/7764#discussion_r288209148
##########
File path:
indexing-service/src/main/java/org/apache/druid/indexing/appenderator/ActionBasedUsedSegmentChecker.java
##########
@@ -50,9 +50,7 @@ public ActionBasedUsedSegmentChecker(TaskActionClient
taskActionClient)
// Group by dataSource
final Map<String, Set<SegmentIdWithShardSpec>> identifiersByDataSource =
new TreeMap<>();
for (SegmentIdWithShardSpec identifier : identifiers) {
- if (!identifiersByDataSource.containsKey(identifier.getDataSource())) {
- identifiersByDataSource.put(identifier.getDataSource(), new
HashSet<>());
- }
+ identifiersByDataSource.putIfAbsent(identifier.getDataSource(), new
HashSet<>());
Review comment:
Done.
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