MINI MINI MANI MO

# ==== Purpose ====
#
# Verify that logical timestamps are generated correctly for all types
# of indexes when binlog_transaction_dependency_tracking=WRITESET.
#
# The following properties are tested:
#
# P1. Any transaction that updates a table having no primary key, must
#     (a) depend on the previous transaction, but (b) must not clear
#     history.
#
#     P1.1. This must hold if the transaction has no writeset.
#           (e.g. it updates only the no-pk table; a no-pk table will
#           not add to the writeset).
#
#     P1.2. This must hold if the transaction has a writeset.
#           (e.g. it updates some other table too).
#
# P2. Any transaction that only updates tables having primary keys
#     must compute its dependencies using the writeset. (In contrast
#     with P1).
#
# P3. A UNIQUE index with NOT NULL constraints on all columns counts
#     as a primary key too.
#
# P4. If there is both a primary key and other keys, then uniqueness
#     constraints due to the other keys generate dependencies too.
#
# P5. If there is both a primary key and nullable columns, then NULL
#     values in the same column do not conflict.
#
# ==== Implementation ====
#
# Repeatedly define a table t1 with three columns a, b, c, using all
# combinations of the following parameters:
#
#  A. Without/with explicit primary key on a.
#
#  B. Without/with NOT NULL constraints on b and c.
#
#  C. Without/with uniqueness constraints on b and/or c.
#
#  D. Without index on b and c/with index on b/with index on c.
#     (Skip the no-index case if uniqueness constraints are required).
#
# This gives 20 combinations. For each such combination, execute the
# following:
#
# INSERT (1, 1, 1)
# INSERT (2, 2, 2)
# -> should be independent
# DELETE (2, 2, 2)
# -> should depend on insert (2, 2, 2)
# UPDATE (1, 1, 1) to (1, 2, 2)
# -> if there are uniqueness constraints on b and/or c, this should
#    depend on delete (2, 2, 2) (and that verifies P4). Otherwise, depend
#    on insert (1, 1, 1). When there is a pk, this verifies P1.1, otherwise
#    it verifies P2.
# if columns b and c are nullable:
#   INSERT (3, NULL, 2)
#   -> should be independent
#   INSERT (4, NULL, 2)
#   -> should be independent since multiple NULL values are allowed.
#      This verifies P5.
#   DELETE (3, NULL, 2)
#   -> should depend on insert (3, NULL, 2) but not on insert (4, NULL, 2)
#      This verifies P5.
#
# To verify P1(b), execute extra, independent transactions updating
# another table t2 after some of the statements above (e.g. after
# delete (2, 2, 2)).  Verify that the extra transaction is marked as
# independent of all the previous ones.
#
# To verify P1.2, include a statement doing an independent insert into
# t2 within the same transaction that inserts (2, 2, 2) in t1.
#
# To distinguish the cases that DELETE (2, 2, 2) depends on INSERT (2,
# 2, 2) (when there is a pk) from the case that it is executed in
# isolation due to not having a pk, we precede it by an independent
# transaction updating another table, t2.  Similar for UPDATE (1, 1,
# 1) to (2, 2, 2), for INSERT (4, NULL, 2), and for DELETE (3, NULL,
# 2).
#
# P3 is verified in the loop iterations where we use both NOT NULL and
# UNIQUE.
#
# ==== References ====
#
# WL#9556: Writeset-based MTS dependency tracking on master

--source include/have_binlog_format_row.inc
--source include/master-slave.inc

--echo #### INITIALIZE ####

--source include/rpl_connection_slave.inc
--source include/stop_slave.inc
SET @save_slave_parallel_workers= @@GLOBAL.slave_parallel_workers;
SET @@GLOBAL.slave_parallel_workers= 4;
--source include/start_slave.inc

--source include/rpl_connection_master.inc
SET @save_binlog_transaction_dependency_tracking = @@GLOBAL.binlog_transaction_dependency_tracking;
SET @save_transaction_write_set_extraction = @@GLOBAL.transaction_write_set_extraction;

SET GLOBAL binlog_transaction_dependency_tracking = COMMIT_ORDER;
SET GLOBAL transaction_write_set_extraction = XXHASH64;
SET SESSION transaction_write_set_extraction = XXHASH64;
SET GLOBAL binlog_transaction_dependency_tracking = WRITESET;

# Tell assert_logical_timestamps to save the current position so that
# the next call will continue where the current ended.
--let $save_binlog_position= 1

# First without any explicit PRIMARY KEY, then with one on column a.
--let $explicit_pk= 0
while ($explicit_pk < 2)
{

  # First with columns b and c NULL-able, then with NOT NULL on both.
  --let $nonnull= 0
  while ($nonnull < 2)
  {

    # First without uniqueness constraints on second index, then with.
    --let $unique= 0
    while ($unique < 2)
    {

      # First without index (unless $unique==1), then with 1-column
      # index, then with 2-column index.
      --let $colcount= $unique
      while ($colcount < 3)
      {

        # Determine if there is a primary key. Unique non-null indexes
        # count as primary if there is no explicit primary key.
        --let $pk= 0
        if ($explicit_pk)
        {
          --let $pk= 1
        }
        if ($unique)
        {
          if ($nonnull)
          {
            --let $pk= 1
          }
        }

        # Compute table definition and header according to all the parameters.
        --let $text= $explicit_pk.$nonnull.$unique.$colcount
        if ($explicit_pk == 0)
        {
          --let $text= $text: WITHOUT PK
          --let $first_column_def= a INT
        }
        if ($explicit_pk == 1)
        {
          --let $text= $text: WITH PK
          --let $first_column_def= a INT PRIMARY KEY
        }
        if ($nonnull == 0)
        {
          --let $text= $text, NULLABLE
          --let $not_null_def=
        }
        if ($nonnull == 1)
        {
          --let $text= $text, NOT NULL
          --let $not_null_def= NOT NULL
        }
        if ($unique == 0)
        {
          --let $text= $text, NOT UNIQUE
          --let $unique_def=
        }
        if ($unique == 1)
        {
          --let $text= $text, UNIQUE
          --let $unique_def= UNIQUE
        }
        if ($colcount == 0)
        {
          --let $text= $text, NO INDEX
          --let $second_index_def=
        }
        if ($colcount == 1)
        {
          --let $text= $text, 1-COLUMN INDEX
          --let $second_index_def= , $unique_def INDEX(b)
        }
        if ($colcount == 2)
        {
          --let $text= $text, 2-COLUMN INDEX
          --let $second_index_def= , $unique_def INDEX(b, c)
        }

        --echo
        --echo #### $text ####
        --echo

        eval CREATE TABLE t1 ($first_column_def, b INT $not_null_def, c INT $not_null_def $second_index_def);
        CREATE TABLE t2 (a INT PRIMARY KEY);

        FLUSH LOGS;
        --source include/save_binlog_position.inc

        --echo # TRX1: independent
        INSERT INTO t1 VALUES (1, 1, 1);

        --echo # now t1 contains one row: (1, 1, 1)
        --let $logical_timestamps= 0 1
        --source include/assert_logical_timestamps.inc

        --echo # TRX2: independent
        BEGIN;
        INSERT INTO t1 VALUES (2, 2, 2);
        INSERT INTO t2 VALUES (1);
        COMMIT;

        --echo # now t1 contains two rows: (1, 1, 1), (2, 2, 2)
        if ($pk)  { --let $logical_timestamps= 1 2
        }
        if (!$pk) { --let $logical_timestamps= 1 2
        }
        --source include/assert_logical_timestamps.inc

        --echo # TRX3: independent
        INSERT INTO t2 VALUES (3);
        --echo # TRX4: depends on TRX2
        DELETE FROM t1 WHERE a = 2;

        --echo # now t1 contains one row: (1, 1, 1)
        if ($pk)  { --let $logical_timestamps= 1 3;2 4
        }
        if (!$pk) { --let $logical_timestamps= 1 3;3 4
        }
        --source include/assert_logical_timestamps.inc

        --echo # TRX5: independent
        INSERT INTO t2 VALUES (5);
        --echo # TRX6: conflict with TRX4 if unique, else with TRX1
        UPDATE t1 SET b = 2, c = 2 WHERE a = 1;

        --echo # now t1 contains one row: (1, 2, 2)
        if ($pk) {
          if ($unique)  { --let $logical_timestamps= 1 5;4 6
          }
          if (!$unique) { --let $logical_timestamps= 1 5;1 6
          }
        }
        if (!$pk) { --let $logical_timestamps= 1 5;5 6
        }
        --source include/assert_logical_timestamps.inc

        if (!$nonnull)
        {

          --echo # TRX7: independent
          INSERT INTO t1 VALUES (3, NULL, 2);

          --echo # now t1 contains two rows: (1, 2, 2), (3, NULL, 2)
          if ($pk)  { --let $logical_timestamps= 1 7
          }
          if (!$pk) { --let $logical_timestamps= 6 7
          }
          --source include/assert_logical_timestamps.inc

          --echo # TRX8: independent
          INSERT INTO t2 VALUES (8);
          --echo # TRX9: independent (no conflict with TRX7 since multiple NULLs are allowed)
          INSERT INTO t1 VALUES (4, NULL, 2);

          --echo # now t1 contains three rows: (1, 2, 2), (3, NULL, 2), (4, NULL, 2)
          if ($pk)  { --let $logical_timestamps= 1 8;1 9
          }
          if (!$pk) { --let $logical_timestamps= 1 8;8 9
          }
          --source include/assert_logical_timestamps.inc

          --echo # TRX10: independent
          INSERT INTO t2 VALUES (10);
          --echo # TRX11: conflict with TRX7 (not with TRX9 since multiple NULLs are allowed)
          DELETE FROM t1 WHERE a = 3;

          --echo # now t1 contains two rows: (1, 2, 2), (4, NULL, 2)
          if ($pk) {  --let $logical_timestamps= 1 10;7 11
          }
          if (!$pk) { --let $logical_timestamps= 1 10;10 11
          }
          --source include/assert_logical_timestamps.inc

        }

        DROP TABLE t1;
        DROP TABLE t2;

        --inc $colcount
       }
       --inc $unique
     }
    --inc $nonnull
  }
  --inc $explicit_pk
}

--echo #### CLEAN UP ####

SET @@GLOBAL.binlog_transaction_dependency_tracking= @save_binlog_transaction_dependency_tracking;
if (`SELECT @@GLOBAL.transaction_write_set_extraction != @save_transaction_write_set_extraction`)
{
  SET @@GLOBAL.transaction_write_set_extraction= @save_transaction_write_set_extraction;
}

--source include/sync_slave_sql_with_master.inc
SET @@GLOBAL.slave_parallel_workers= @save_slave_parallel_workers;

--source include/rpl_end.inc