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UpdatePartitionState to avoid restarting Producer #375

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UpdatePartitionState to avoid restarting Producer #375

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UpdatePartitionState to avoid restarting Producer
suyashtava Sep 14, 2022
812df82
Merge branch 'linkedin:master' into NewPartitionHandler
suyashtava Mar 22, 2023
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18 changes: 17 additions & 1 deletion src/main/java/com/linkedin/xinfra/monitor/services/ProduceService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -178,6 +178,20 @@ private void initializeStateForPartitions(int partitionNum) {
}
_partitionNum.set(partitionNum);
}

private void updateStateForPartitions(int partitionNum) {
Map<Integer, String> keyMapping = generateKeyMappings(partitionNum);
for (int partition = 0; partition < partitionNum; partition++) {
String key = keyMapping.get(partition);
/* This is what preserves sequence numbers across restarts */
if (!_nextIndexPerPartition.containsKey(partition)) {
_nextIndexPerPartition.put(partition, new AtomicLong(0));
_sensors.addPartitionSensors(partition);
_produceExecutor.scheduleWithFixedDelay(new ProduceRunnable(partition, key), _produceDelayMs, _produceDelayMs, TimeUnit.MILLISECONDS);
}
}
_partitionNum.set(partitionNum);
}

private Map<Integer, String> generateKeyMappings(int partitionNum) {
HashMap<Integer, String> keyMapping = new HashMap<>();
Expand Down Expand Up @@ -280,7 +294,7 @@ public void run() {
}
LOG.info("{}/ProduceService detected new partitions of topic {}", _name, _topic);
//TODO: Should the ProduceService exit if we can't restart the producer runnables?
_produceExecutor.shutdown();
/* _produceExecutor.shutdown();
try {
_produceExecutor.awaitTermination(Integer.MAX_VALUE, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
Expand All @@ -295,6 +309,8 @@ public void run() {
}
_produceExecutor = Executors.newScheduledThreadPool(_threadsNum);
initializeStateForPartitions(currentPartitionNum);
*/
updateStateForPartitions(currentPartitionNum);
LOG.info("New partitions added to monitoring.");
} catch (InterruptedException e) {
LOG.error("InterruptedException occurred.", e);
Expand Down