Revert "dbms: fixed high CPU usage on failed INSERTs [#METR-12726]."

This reverts commit 49cf3bbd0d8af92a756b46039a7a52fa81992765.

dbms/include/DB/Storages/MergeTree/MergeTreeBlockOutputStream.h

@@ -12,11 +12,6 @@ public:
 	MergeTreeBlockOutputStream(StorageMergeTree & storage_)
 		: storage(storage_) {}
 
-	void writePrefix()
-	{
-		storage.data.throwIfTooMuchParts();
-	}
-
 	void write(const Block & block)
 	{
 		auto part_blocks = storage.writer.splitBlockIntoParts(block);

dbms/include/DB/Storages/MergeTree/MergeTreeData.h

@@ -637,7 +637,6 @@ public:
 	  * Если передано until - проснуться раньше, если наступило событие.
 	  */
 	void delayInsertIfNeeded(Poco::Event * until = nullptr);
-	void throwIfTooMuchParts();
 
 	/** Возвращает активный кусок с указанным именем или кусок, покрывающий его. Если такого нет, возвращает nullptr.
 	  */

dbms/include/DB/Storages/MergeTree/ReplicatedMergeTreeBlockOutputStream.h

@@ -15,11 +15,6 @@ public:
 		: storage(storage_), insert_id(insert_id_), block_index(0),
 		log(&Logger::get(storage.data.getLogName() + " (Replicated OutputStream)")) {}
 
-	void writePrefix()
-	{
-		storage.data.throwIfTooMuchParts();
-	}
-
 	void write(const Block & block) override
 	{
 		assertSessionIsNotExpired();

dbms/src/Storages/MergeTree/MergeTreeData.cpp

@@ -844,12 +844,6 @@ size_t MergeTreeData::getMaxPartsCountForMonth()
 	return res;
 }
 
-void MergeTreeData::throwIfTooMuchParts()
-{
-	ProfileEvents::increment(ProfileEvents::RejectedInserts);
-	throw Exception("Too much parts. Merges are processing significantly slower than inserts.", ErrorCodes::TOO_MUCH_PARTS);
-}
-
 void MergeTreeData::delayInsertIfNeeded(Poco::Event * until)
 {
 	size_t parts_count = getMaxPartsCountForMonth();
@@ -859,7 +853,10 @@ void MergeTreeData::delayInsertIfNeeded(Poco::Event * until)
 		delay /= 1000;
 
 		if (delay > DBMS_MAX_DELAY_OF_INSERT)
-			delay = DBMS_MAX_DELAY_OF_INSERT;
+		{
+			ProfileEvents::increment(ProfileEvents::RejectedInserts);
+			throw Exception("Too much parts. Merges are processing significantly slower than inserts.", ErrorCodes::TOO_MUCH_PARTS);
+		}
 
 		ProfileEvents::increment(ProfileEvents::DelayedInserts);
 		ProfileEvents::increment(ProfileEvents::DelayedInsertsMilliseconds, delay * 1000);