alievmirza commented on code in PR #3225:
URL: https://github.com/apache/ignite-3/pull/3225#discussion_r1507403328
##########
modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/rebalance/DistributionZoneRebalanceEngine.java:
##########
@@ -214,6 +242,85 @@ public void onError(Throwable e) {
};
}
+ /**
+ * Creates watch listener for tables from a zone. This counter is needed
for tracking rebalances for a specified partition along all
+ * tables. Once all rebalances for specified partition number are finished
(meaning that counter is equal to 0), we can perform stable
+ * switch for all stable keys from meta storage.
+ *
+ * @return Corresponding watch listener.
+ */
+ private WatchListener createPartitionsCounterListener() {
+ return new WatchListener() {
+ @Override
+ public CompletableFuture<Void> onUpdate(WatchEvent event) {
+ return IgniteUtils.inBusyLockAsync(busyLock, () -> {
+
+ int counter = ((Set<Integer>)
fromBytes(event.entryEvent().newEntry().value())).size();
+
+ assert counter >= 0 : "Tables counter for rabalances
cannot be negative.";
+
+ if (counter > 0) {
+ return nullCompletedFuture();
+ }
+
+ int zoneId =
RebalanceUtil.extractZoneIdFromTablesCounter(event.entryEvent().newEntry().key());
+
+ List<CatalogTableDescriptor> tables =
findTablesByZoneId(zoneId, catalogService.latestCatalogVersion(),
catalogService);
+
+ rebalanceScheduler.schedule(() -> {
+ if (!busyLock.enterBusy()) {
+ return;
+ }
+
+ LOG.info("Started to update stable keys for tables
from the zone [zoneId = {}, tables = [{}]]",
Review Comment:
done
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