Fix tx counters crash (ydb-platform#9515)

Author: FloatingCrowbar

ydb/core/persqueue/partition_write.cpp

@@ -470,20 +470,14 @@ void TPartition::UpdateAfterWriteCounters(bool writeComplete) {
         // If supportive - update counters only prior to write, otherwise - only after writes;
         return;
     }
-    if (BytesWrittenGrpc)
-        BytesWrittenGrpc.Inc(WriteNewSizeInternal);
-    if (BytesWrittenTotal)
-        BytesWrittenTotal.Inc(WriteNewSize);
-
-    if (BytesWrittenUncompressed)
-        BytesWrittenUncompressed.Inc(WriteNewSizeUncompressed);
+    BytesWrittenGrpc.Inc(WriteNewSizeInternal);
+    BytesWrittenTotal.Inc(WriteNewSize);
+    BytesWrittenUncompressed.Inc(WriteNewSizeUncompressed);
     if (BytesWrittenComp)
         BytesWrittenComp.Inc(WriteCycleSize);
-    if (MsgsWrittenGrpc)
-        MsgsWrittenGrpc.Inc(WriteNewMessagesInternal);
-    if (MsgsWrittenTotal) {
-        MsgsWrittenTotal.Inc(WriteNewMessages);
-    }
+
+    MsgsWrittenGrpc.Inc(WriteNewMessagesInternal);
+    MsgsWrittenTotal.Inc(WriteNewMessages);
 }
 
 void TPartition::HandleWriteResponse(const TActorContext& ctx) {

ydb/core/persqueue/percentile_counter.cpp

@@ -177,6 +177,9 @@ void TPartitionHistogramWrapper::Setup(bool isSupportivePartition, std::unique_p
     }
 }
 void TPartitionHistogramWrapper::IncFor(ui64 key, ui64 value) {
+    if (!Inited)
+        return;
+
     if (!IsSupportivePartition) {
         return Histogram->IncFor(key, value);
     }

ydb/core/persqueue/percentile_counter.h

@@ -59,8 +59,8 @@ NKikimr::NPQ::TPercentileCounter CreateSLIDurationCounter(
 
 class TPartitionCounterWrapper {
 private:
-    bool DoSave;
-    bool DoReport;
+    bool DoSave = false;
+    bool DoReport = false;
     TMaybe<NKikimr::NPQ::TMultiCounter> Counter;
     ui64 CounterValue = 0;
     bool Inited = false;