ydb_topic writer: remove obsolete fields (#8533)

Author: qyryq

ydb/public/sdk/cpp/client/ydb_topic/impl/write_session_impl.cpp

@@ -404,10 +404,6 @@ void TWriteSessionImpl::InitWriter() { // No Lock, very initial start - no race
             ThrowFatalError("ProducerId != MessageGroupId scenario is currently not supported");
     }
     CompressionExecutor = Settings.CompressionExecutor_;
-    IExecutor::TPtr executor;
-    executor = CreateSyncExecutor();
-    executor->Start();
-    Executor = std::move(executor);
 
     Settings.CompressionExecutor_->Start();
     Settings.EventHandlers_.HandlersExecutor_->Start();
@@ -1206,7 +1202,6 @@ void TWriteSessionImpl::ResetForRetryImpl() {
     }
     if (!OriginalMessagesToSend.empty() && OriginalMessagesToSend.front().Id < minId)
         minId = OriginalMessagesToSend.front().Id;
-    MinUnsentId = minId;
     Y_ABORT_UNLESS(PackedMessagesToSend.size() == totalPackedMessages);
     Y_ABORT_UNLESS(OriginalMessagesToSend.size() == totalOriginalMessages);
 }

ydb/public/sdk/cpp/client/ydb_topic/impl/write_session_impl.h

@@ -410,10 +410,7 @@ class TWriteSessionImpl : public TContinuationTokenIssuer,
     TWriteSessionSettings Settings;
     std::shared_ptr<TTopicClient::TImpl> Client;
     std::shared_ptr<TGRpcConnectionsImpl> Connections;
-    TString TargetCluster;
-    TString InitialCluster;
-    TString CurrentCluster;
-    TString PreferredClusterByCDS;
+
     std::shared_ptr<IWriteSessionConnectionProcessorFactory> ConnectionFactory;
     TDbDriverStatePtr DbDriverState;
     TStringType PrevToken;
@@ -433,7 +430,6 @@ class TWriteSessionImpl : public TContinuationTokenIssuer,
     std::shared_ptr<TServerMessage> ServerMessage; // Server message to write server response to.
 
     TString SessionId;
-    IExecutor::TPtr Executor;
     IExecutor::TPtr CompressionExecutor;
     size_t MemoryUsage = 0; //!< Estimated amount of memory used
     bool FirstTokenSent = false;
@@ -456,10 +452,8 @@ class TWriteSessionImpl : public TContinuationTokenIssuer,
     ui32 PartitionId = 0;
     TPartitionLocation PreferredPartitionLocation = {};
     ui64 NextId = 0;
-    ui64 MinUnsentId = 1;
     TMaybe<ui64> InitSeqNo;
     TMaybe<bool> AutoSeqNoMode;
-    bool ValidateSeqNoMode = false;
 
     NThreading::TPromise<ui64> InitSeqNoPromise;
     bool InitSeqNoSetDone = false;