[GitHub] [ignite-3] sanpwc commented on a diff in pull request #1986: IGNITE-18755 Do not save the empty data nodes list to avoid the distribution zone without a data nodes. Fixed exceptions in test logs of DistributionZoneManagerScaleUpTest, DistributionZoneManagerConfigurationChangesTest, DistributionZoneManagerWatchListenerTest.

["sanpwc (via GitHub)" <gi...@apache.org>]

sanpwc commented on code in PR #1986:
URL: https://github.com/apache/ignite-3/pull/1986#discussion_r1180607008


##########
modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/DistributionZoneManager.java:
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@@ -1595,6 +1598,11 @@ CompletableFuture<Void> saveDataNodesToMetaStorageOnScaleDown(int zoneId, long r
                         .thenApply(StatementResult::getAsBoolean)
                         .thenCompose(invokeResult -> inBusyLock(busyLock, () -> {
                             if (invokeResult) {
+                                if (newDataNodes.isEmpty()) {
+                                    LOG.debug("Data nodes for a zone was not updated because"

Review Comment:
   Should we still update trigger key?



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