J-HowHuang commented on code in PR #17453:
URL: https://github.com/apache/pinot/pull/17453#discussion_r2687764432
##########
pinot-server/src/main/java/org/apache/pinot/server/starter/helix/SegmentOnlineOfflineStateModelFactory.java:
##########
@@ -247,4 +254,43 @@ public void onBecomeDroppedFromError(Message message,
NotificationContext contex
}
}
}
+
+ /**
+ *Get thread pool to handle the given state transition message.
+ * If this method returns null, the threadpool returned from
+ * {@link StateModelFactory#getExecutorService(String resourceName, String
fromState, String toState)} will be used;
+ * it this method returns null the threadpool returned from
+ * {@link StateModelFactory#getExecutorService(String resourceName)} will be
used.
+ * If that method return null too, then the default shared threadpool will
be used.
+ * This method may be called only once for each category of messages,
+ * it will NOT be called during each state transition.
+ * @param messageInfo contains information used to categorize messages to
use different threadpools
+ * @return An object contains the MessageIdentifierBase and the assigned
threadpool for the input message
+ */
+ @Override
+ @Nullable
+ public CustomizedExecutorService getExecutorService(Message.MessageInfo
messageInfo) {
+ if (_stateTransitionThreadPoolManager == null) {
+ return null;
Review Comment:
done
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