korlov42 commented on code in PR #5502:
URL: https://github.com/apache/ignite-3/pull/5502#discussion_r2018271720
##########
modules/catalog/src/main/java/org/apache/ignite/internal/catalog/storage/UpdateLogImpl.java:
##########
@@ -120,11 +123,20 @@ public CompletableFuture<Void>
startAsync(ComponentContext componentContext) {
this.listener = listener;
metastore.registerPrefixWatch(CatalogKey.updatePrefix(), listener);
+
+ Update putProductKey = ops(
+ put(CatalogKey.catalogProduct(), MAGIC_BYTES)
+ ).yield(false);
+
+ Iif writeProductKeyIfNotExist = iif(
+ notExists(CatalogKey.catalogProduct()),
+ putProductKey, ops().yield(false)
+ );
+ return
metastore.invoke(writeProductKeyIfNotExist).thenApply(ignore -> null);
Review Comment:
no need to invoke distributed operation on every start. Let's check presence
of the key locally `metastore.getLocally(CatalogKey.catalogProduct());` and
invoke distributed update only in case the key does not exist
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