The TEvProposePartitionConfig message is sent only to the main partitions (ydb-platform#9599)

Author: Alek5andr-Kotov

ydb/core/persqueue/pq_impl.cpp

@@ -554,7 +554,7 @@ class TMonitoringProxy : public TActorBootstrapped<TMonitoringProxy> {
     , TabletID(tabletId)
     , Inflight(inflight)
     {
-        for (auto& p: Partitions) {
+        for (auto& p : Partitions) {
             Results[p.first].push_back(Sprintf("Partition %u: NO DATA", p.first));
         }
     }
@@ -691,6 +691,10 @@ void TPersQueue::ApplyNewConfigAndReply(const TActorContext& ctx)
     ClearNewConfig();
 
     for (auto& p : Partitions) { //change config for already created partitions
+        if (p.first.IsSupportivePartition()) {
+            continue;
+        }
+
         ctx.Send(p.second.Actor, new TEvPQ::TEvChangePartitionConfig(TopicConverter, Config, BootstrapConfigTx ? *BootstrapConfigTx : NKikimrPQ::TBootstrapConfig()));
     }
     ChangePartitionConfigInflight += Partitions.size();
@@ -1873,13 +1877,19 @@ void TPersQueue::Handle(TEvPersQueue::TEvOffsets::TPtr& ev, const TActorContext&
     }
     ui32 cnt = 0;
     for (auto& p : Partitions) {
-         cnt += p.second.InitDone;
+        if (p.first.IsSupportivePartition()) {
+            continue;
+        }
+
+        cnt += p.second.InitDone;
     }
     TActorId ans = CreateOffsetsProxyActor(TabletID(), ev->Sender, cnt, ctx);
 
     for (auto& p : Partitions) {
-        if (!p.second.InitDone)
+        if (!p.second.InitDone || p.first.IsSupportivePartition()) {
             continue;
+        }
+
         THolder<TEvPQ::TEvPartitionOffsets> event = MakeHolder<TEvPQ::TEvPartitionOffsets>(ans, ev->Get()->Record.HasClientId() ?
                                                                                         ev->Get()->Record.GetClientId() : "");
         ctx.Send(p.second.Actor, event.Release());
@@ -1937,15 +1947,20 @@ void TPersQueue::Handle(TEvPersQueue::TEvStatus::TPtr& ev, const TActorContext&
     }
 
     ui32 cnt = 0;
-    for (auto& [_, partitionInfo] : Partitions) {
-         cnt += partitionInfo.InitDone;
+    for (auto& [partitionId, partitionInfo] : Partitions) {
+        if (partitionId.IsSupportivePartition()) {
+            continue;
+        }
+
+        cnt += partitionInfo.InitDone;
     }
 
     TActorId ans = CreateStatusProxyActor(TabletID(), ev->Sender, cnt, ev->Cookie, ctx);
     for (auto& p : Partitions) {
-        if (!p.second.InitDone) {
+        if (!p.second.InitDone || p.first.IsSupportivePartition()) {
             continue;
         }
+
         THolder<TEvPQ::TEvPartitionStatus> event;
         if (ev->Get()->Record.GetConsumers().empty()) {
             event = MakeHolder<TEvPQ::TEvPartitionStatus>(ans, ev->Get()->Record.HasClientId() ? ev->Get()->Record.GetClientId() : "",
@@ -4556,7 +4571,11 @@ void TPersQueue::SendProposeTransactionAbort(const TActorId& target,
 void TPersQueue::SendEvProposePartitionConfig(const TActorContext& ctx,
                                               TDistributedTransaction& tx)
 {
-    for (auto& [_, partition] : Partitions) {
+    for (auto& [partitionId, partition] : Partitions) {
+        if (partitionId.IsSupportivePartition()) {
+            continue;
+        }
+
         auto event = std::make_unique<TEvPQ::TEvProposePartitionConfig>(tx.Step, tx.TxId);
 
         event->TopicConverter = tx.TopicConverter;
@@ -4567,7 +4586,7 @@ void TPersQueue::SendEvProposePartitionConfig(const TActorContext& ctx,
     }
 
     tx.PartitionRepliesCount = 0;
-    tx.PartitionRepliesExpected = Partitions.size();
+    tx.PartitionRepliesExpected = OriginalPartitionsCount;
 }
 
 TActorId TPersQueue::GetPartitionQuoter(const TPartitionId& partition) {

ydb/public/sdk/cpp/client/ydb_topic/ut/topic_to_table_ut.cpp

@@ -2023,6 +2023,26 @@ Y_UNIT_TEST_F(WriteToTopic_Demo_38, TFixture)
     WriteMessagesInTx(0, 1);
 }
 
+Y_UNIT_TEST_F(WriteToTopic_Demo_39, TFixture)
+{
+    CreateTopic("topic_A", TEST_CONSUMER);
+
+    NTable::TSession tableSession = CreateTableSession();
+    NTable::TTransaction tx = BeginTx(tableSession);
+
+    WriteToTopic("topic_A", TEST_MESSAGE_GROUP_ID, "message #1", &tx);
+    WriteToTopic("topic_A", TEST_MESSAGE_GROUP_ID, "message #2", &tx);
+
+    WaitForAcks("topic_A", TEST_MESSAGE_GROUP_ID);
+
+    AddConsumer("topic_A", {"consumer"});
+
+    CommitTx(tx, EStatus::SUCCESS);
+
+    auto messages = ReadFromTopic("topic_A", "consumer", TDuration::Seconds(2));
+    UNIT_ASSERT_VALUES_EQUAL(messages.size(), 2);
+}
+
 }
 
 }