danny0405 commented on code in PR #19971:
URL: https://github.com/apache/hudi/pull/19971#discussion_r4025393426
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hudi-client/hudi-client-common/src/main/java/org/apache/hudi/client/heartbeat/HoodieHeartbeatClient.java:
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@@ -144,14 +146,45 @@ public void start(String instantTime) {
Heartbeat newHeartbeat = new Heartbeat();
newHeartbeat.setHeartbeatStarted(true);
instantToHeartbeatMap.put(instantTime, newHeartbeat);
- // Ensure heartbeat is generated for the first time with this blocking
call.
- // Since scheduler submits the task to a thread, no guarantee when that
thread will get CPU
- // cycles to generate the first heartbeat.
+ // Attempt the first heartbeat synchronously. A timed-out write is retried
by the scheduler;
+ // callers that need a confirmed heartbeat before proceeding can use
awaitHeartbeat().
Review Comment:
didn't quite get this, the heartbeat is updated instantly in memory right?
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