polardbxengine/mysql-test/suite/innodb/t/log_first_rec_group.test

# Test adjusted to 16k pages.
--source include/have_innodb_16k.inc

# We use DBUG_EXECUTE_IF.
--source include/have_debug.inc

# Required for the crash just after COMMIT resulting in recovery without rows.
--source include/not_log_bin.inc

# Currently valgrind has issues with DBUG_SUICIDE().
--source include/not_valgrind.inc

--disable_query_log
--disable_result_log
let $MYSQLD_DATADIR= `SELECT @@datadir`;
let $MYSQLD_SOCKET= `SELECT @@socket`;
let $MYSQLD_PORT= `SELECT @@port`;

--echo # Initialization - create table.
CREATE TABLE t (a INT NOT NULL PRIMARY KEY) ENGINE = InnoDB;

let $debug_test = 0;

--echo #
--echo # Scenario 1. Crash during recovery crash, when recovery ends in the same block as checkpoint_lsn.
--echo #

let $pass = 0;

while ($pass != 2) {

  --echo Pass: $pass

  DELETE FROM t;
  INSERT INTO t (a) VALUES (100);

  # Enable all METRICS within log module
  SET GLOBAL innodb_monitor_enable = module_log;

  # Disable background threads that could modify pages
  SET GLOBAL innodb_dict_stats_disabled_debug = 1;
  SET GLOBAL innodb_master_thread_disabled_debug = 1;
  SET GLOBAL innodb_purge_stop_now = 1;

  # Execute sharp checkpoint (flush all pages)
  SET GLOBAL innodb_log_checkpoint_now = 1;

  --echo # 0. Move to the next log block.
  let $log_fill_block_sql = INSERT INTO t(a) VALUES (101);
  let $log_fill_block_and_crash = 0;
  --source ../include/log_fill_block.inc
  let $start_lsn = $end_lsn;

  --echo # 1. Execute tiny mini transaction in the current block [only pass 0]
  if ($pass == 0) {
    SET AUTOCOMMIT = 0;
    INSERT INTO t (a) VALUES(102);

    if ($debug_test) {
      --source ../include/log_read_current_lsn.inc
      --echo State: after writing first mtr to the block
      --echo LSN: $current_lsn
    }
  }

  --echo # 2. Create checkpoint at the current lsn and block further checkpoints
  SET GLOBAL innodb_log_checkpoint_now = 1;
  SET GLOBAL innodb_page_cleaner_disabled_debug = 1;
  SET GLOBAL innodb_checkpoint_disabled = 1;

  if ($debug_test) {
    --source ../include/log_read_current_lsn.inc
    --source ../include/log_read_checkpoint_lsn.inc
    --echo State: after checkpoint write
    --echo LSN: $current_lsn
    --echo Checkpoint LSN: $checkpoint_lsn
  }

  --echo # 3. Execute transaction to force non-trivial crash recovery: 103.
  INSERT INTO t (a) VALUES (103);
  COMMIT;

  --source ../include/log_read_current_lsn.inc
  --let $end_lsn = $current_lsn
  if ($debug_test) {
    --echo State: after writing 103
    --echo LSN: $end_lsn
  }

  --let $assert_text = All must happen within the single log block (this was required for the bug)
  --let $assert_cond = [SELECT $start_lsn DIV 512] = [SELECT ($end_lsn + 50) DIV 512]
  --source include/assert.inc

  --echo # 5. Crash when trying to insert B.
  SET GLOBAL DEBUG="+d,mtr_commit_crash";
  --source include/expect_crash.inc
  --error 2013
  INSERT INTO t (a) VALUES (105);

  --echo # 6. Recover 103, write new redo record X during recovery and crash just before flushing page with 103

  --error 137
  --exec $MYSQLD --no-defaults --datadir=$MYSQLD_DATADIR --socket=$MYSQLD_SOCKET --port=$MYSQLD_PORT --skip-ssl --secure-file-priv="" --skip-mysqlx --debug="+d,log_first_rec_group_test"

  --echo # 7. Start recovery and ensure all is recovered - we must recover 103.
  --echo #    If first_rec_group was pointing to X we would skip 103.
  --source include/start_mysqld.inc

  --enable_query_log
  --enable_result_log
  SELECT * FROM t;
  --disable_query_log
  --disable_result_log

  inc $pass;
}

# Note that all global settings (disabled purge, dict_stats etc) are reset because
# we have restarted mysqld.

--echo #
--echo # Scenario 2. Restart after writing full log block with record ending at boundary,
--echo #             recovery should start in middle of the last written block (pass 0, 2)
--echo #             or at the beginning of that block (pass 1, 3) and end before the next
--echo #             block (pass 0, 1) or just 12 bytes after its beginning (pass 2, 3).
--echo #

let $pass = 0;

while ($pass != 4) {

  --echo Pass: $pass

  DELETE FROM t;
  INSERT INTO t (a) VALUES (200);

  # Enable all METRICS within log module
  SET GLOBAL innodb_monitor_enable = module_log;

  # Disable background threads that could modify pages
  SET GLOBAL innodb_dict_stats_disabled_debug = 1;
  SET GLOBAL innodb_master_thread_disabled_debug = 1;
  SET GLOBAL innodb_purge_stop_now = 1;

  # Execute sharp checkpoint (flush all pages)
  SET GLOBAL innodb_log_checkpoint_now = 1;

  --echo # 0. Move to the next log block
  let $log_fill_block_sql = INSERT INTO t(a) VALUES (201);
  let $log_fill_block_and_crash = 0;
  --source ../include/log_fill_block.inc

  --echo # 1. Execute tiny mini transaction in the current block [pass 0, 2]
  let $insert_202 = 0;
  if ($pass == 0) {
    let $insert_202 = 1;
  }
  if ($pass == 2) {
    let $insert_202 = 1;
  }
  if ($insert_202 == 1) {
    SET AUTOCOMMIT = 0;
    INSERT INTO t (a) VALUES (202);
  }

  # Execute sharp checkpoint (flush all pages) and block further checkpoints
  SET GLOBAL innodb_log_checkpoint_now = 1;
  SET GLOBAL innodb_page_cleaner_disabled_debug = 1;
  SET GLOBAL innodb_checkpoint_disabled = 1;

  --echo # 2. Write up to the end of the block.
  let $crash_at_203 = 0;
  if ($pass == 0) {
    let $crash_at_203 = 1;
  }
  if ($pass == 1) {
    let $crash_at_203 = 1;
  }

  --echo # 3. Crash on writing next 12 bytes of incomplete block [pass 0, 1].
  let $log_fill_block_and_crash = $crash_at_203;
  let $log_fill_block_sql = INSERT INTO t(a) VALUES (203);
  --source ../include/log_fill_block.inc
  let $log_fill_block_and_crash = 0;

  --echo # 4. If we still haven't crashed, force mtr to crash.
  if ($crash_at_203 == 0) {
    SET GLOBAL DEBUG = "+d,mtr_commit_crash";
    --source include/expect_crash.inc
    --error 2013
    INSERT INTO t (a) VALUES (204);
  }

  --echo # 5. Start MySQL after crash to see how it takes care of recovery
  --source include/start_mysqld.inc

  --enable_query_log
  --enable_result_log
  SELECT * FROM t;
  --disable_query_log
  --disable_result_log

  inc $pass;
}

# Note that all global settings (disabled purge, dict_stats etc) are reset because
# we have restarted mysqld.

--echo # Cleanup...

DROP TABLE t;

--enable_query_log
--enable_result_log