[RFC PATCH 01/23] vinyl: do not turn REPLACE into INSERT when processing DML request

[Vladimir Davydov <vdavydov.dev@gmail.com>]

Since in presence of secondary indexes we read the primary index when
processing a REPLACE request anyway, we turn it into INSERT if no tuple
matching the new tuple is found so that INSERT+DELETE gets annihilated
on compaction.

However, in the scope of #2129 we are planning to optimize the read out
so that this transformation won't be possible anymore. So let's remove
it now.

Needed for #2129
---
 src/box/vinyl.c                    |  8 --------
 test/vinyl/layout.result           | 20 ++++++++++----------
 test/vinyl/write_iterator.result   |  6 ------
 test/vinyl/write_iterator.test.lua |  2 --
 4 files changed, 10 insertions(+), 26 deletions(-)

diff --git a/src/box/vinyl.c b/src/box/vinyl.c
index 6dd22884..f9c2843e 100644
--- a/src/box/vinyl.c
+++ b/src/box/vinyl.c
@@ -1540,14 +1540,6 @@ vy_replace_impl(struct vy_env *env, struct vy_tx *tx, struct space *space,
 			 new_stmt, &old_stmt) != 0)
 		goto error;
 
-	if (old_stmt == NULL) {
-		/*
-		 * We can turn REPLACE into INSERT if the new key
-		 * does not have history.
-		 */
-		vy_stmt_set_type(new_stmt, IPROTO_INSERT);
-	}
-
 	/*
 	 * Replace in the primary index without explicit deletion
 	 * of the old tuple.
diff --git a/test/vinyl/layout.result b/test/vinyl/layout.result
index 49826302..1f928a8f 100644
--- a/test/vinyl/layout.result
+++ b/test/vinyl/layout.result
@@ -253,17 +253,17 @@ result
   - - 00000000000000000008.run
     - - HEADER:
           lsn: 10
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: ['ёёё', null]
       - HEADER:
           lsn: 9
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: ['эээ', null]
       - HEADER:
           lsn: 8
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: ['ЭЭЭ', null]
       - HEADER:
@@ -297,12 +297,12 @@ result
           tuple: ['ёёё', 123]
       - HEADER:
           lsn: 13
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: ['ююю', 789]
       - HEADER:
           lsn: 12
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: ['ЮЮЮ', 456]
       - HEADER:
@@ -331,17 +331,17 @@ result
   - - 00000000000000000006.run
     - - HEADER:
           lsn: 10
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: [null, 'ёёё']
       - HEADER:
           lsn: 9
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: [null, 'эээ']
       - HEADER:
           lsn: 8
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: [null, 'ЭЭЭ']
       - HEADER:
@@ -380,12 +380,12 @@ result
           tuple: [123, 'ёёё']
       - HEADER:
           lsn: 12
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: [456, 'ЮЮЮ']
       - HEADER:
           lsn: 13
-          type: INSERT
+          type: REPLACE
         BODY:
           tuple: [789, 'ююю']
       - HEADER:
diff --git a/test/vinyl/write_iterator.result b/test/vinyl/write_iterator.result
index c38de5d3..162d8463 100644
--- a/test/vinyl/write_iterator.result
+++ b/test/vinyl/write_iterator.result
@@ -765,9 +765,6 @@ box.snapshot()
 _ = s:insert{1, 1} -- insert
 ---
 ...
-_ = s:replace{2, 2} -- replace, no old tuple
----
-...
 _ = s:upsert({3, 3}, {{'!', 1, 1}}) -- upsert, no old tuple
 ---
 ...
@@ -794,9 +791,6 @@ box.snapshot()
 s:delete{1}
 ---
 ...
-s:delete{2}
----
-...
 s:delete{3}
 ---
 ...
diff --git a/test/vinyl/write_iterator.test.lua b/test/vinyl/write_iterator.test.lua
index 73c90c42..9a6cc480 100644
--- a/test/vinyl/write_iterator.test.lua
+++ b/test/vinyl/write_iterator.test.lua
@@ -326,7 +326,6 @@ for i = 1001, 1000 + PAD1 do s:replace{i, i} end
 box.snapshot()
 -- Generate some INSERT statements and dump them to disk.
 _ = s:insert{1, 1} -- insert
-_ = s:replace{2, 2} -- replace, no old tuple
 _ = s:upsert({3, 3}, {{'!', 1, 1}}) -- upsert, no old tuple
 box.begin() s:insert{4, 4} s:delete(4) box.commit()
 box.begin() s:insert{5, 5} s:replace{5, 5, 5} box.commit()
@@ -336,7 +335,6 @@ _ = s:insert{8, 8}
 box.snapshot()
 -- Delete the inserted tuples and trigger compaction.
 s:delete{1}
-s:delete{2}
 s:delete{3}
 s:delete{4}
 s:delete{5}
-- 
2.11.0