ritegarg commented on code in PR #2313:
URL: https://github.com/apache/phoenix/pull/2313#discussion_r2525632912
##########
phoenix-core-server/src/main/java/org/apache/phoenix/coprocessor/PhoenixRegionServerEndpoint.java:
##########
@@ -195,4 +212,56 @@ public ServerMetadataCache getServerMetadataCache() {
return ServerMetadataCacheImpl.getInstance(conf);
}
+ /**
+ * Prewarms HAGroupStoreClients in background thread with retry.
+ * Initializes all HA group clients asynchronously at startup.
+ */
+ private void startHAGroupStoreClientPrewarming() {
+ prewarmExecutor = Executors.newSingleThreadExecutor(r -> {
+ Thread t = new Thread(r, "HAGroupStoreClient-Prewarm");
+ t.setDaemon(true);
+ return t;
+ });
+
+ prewarmExecutor.submit(() -> {
+ try {
+ HAGroupStoreManager manager =
HAGroupStoreManager.getInstance(conf);
+ if (manager == null) {
+ LOGGER.warn("HAGroupStoreManager is null, skipping
prewarming");
+ return;
+ }
+
+ List<String> pending = new
ArrayList<>(manager.getHAGroupNames());
Review Comment:
Updated the prewarm method to handle this condition. Also updated the javadoc
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