akalash commented on a change in pull request #17946:
URL: https://github.com/apache/flink/pull/17946#discussion_r760262338
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/ExecutionAttemptMappingProvider.java
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@@ -38,32 +38,34 @@
private final List<ExecutionVertex> tasks;
/** The cached mapping, which would only be updated on miss. */
- private final LinkedHashMap<ExecutionAttemptID, ExecutionVertex>
cachedTasksById;
+ private volatile Map<ExecutionAttemptID, ExecutionVertex> cachedTasksById;
public ExecutionAttemptMappingProvider(Iterable<ExecutionVertex>
tasksIterable) {
this.tasks = new ArrayList<>();
tasksIterable.forEach(this.tasks::add);
- this.cachedTasksById =
- new LinkedHashMap<ExecutionAttemptID,
ExecutionVertex>(tasks.size()) {
-
- @Override
- protected boolean removeEldestEntry(
- Map.Entry<ExecutionAttemptID, ExecutionVertex>
eldest) {
- return size() > tasks.size();
- }
- };
+ this.cachedTasksById = new ConcurrentHashMap<>(tasks.size());
Review comment:
Yes, it looks like our map is immutable so I can use HashMap here
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