madrob commented on a change in pull request #1561:
URL: https://github.com/apache/lucene-solr/pull/1561#discussion_r439010217
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File path: solr/core/src/java/org/apache/solr/cloud/OverseerTaskProcessor.java
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@@ -253,20 +277,22 @@ public void run() {
continue;
}
- blockedTasks.clear(); // clear it now; may get refilled below.
+ // clear the blocked tasks, may get refilled below. Given
blockedTasks can only get entries from heads and heads
+ // has at most MAX_BLOCKED_TASKS tasks, blockedTasks will never
exceed MAX_BLOCKED_TASKS entries.
+ // Note blockedTasks can't be cleared too early as it is used in the
excludedTasks Predicate above.
+ blockedTasks.clear();
+
+ // Trigger the creation of a new Session used for locking when/if a
lock is later acquired on the OverseerCollectionMessageHandler
+ batchSessionId++;
- taskBatch.batchId++;
boolean tooManyTasks = false;
for (QueueEvent head : heads) {
if (!tooManyTasks) {
- synchronized (runningTasks) {
tooManyTasks = runningTasksSize() >= MAX_PARALLEL_TASKS;
- }
}
if (tooManyTasks) {
// Too many tasks are running, just shove the rest into the
"blocked" queue.
- if(blockedTasks.size() < MAX_BLOCKED_TASKS)
- blockedTasks.put(head.getId(), head);
+ blockedTasks.put(head.getId(), head);
Review comment:
Ah, ok, I saw that but then missed the connection by the time I got to
this method.
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