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MDEV-7591 master crashed when slave specfied a future position with semi-repl plugin

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cherry-pick the upstream fix

commit d4ba10184cd7bde9c31c610e664ecd0c93605c46
Author: Sujatha Sivakumar <sujatha.sivakumar@oracle.com>
Date:   Wed Jul 2 11:34:11 2014 +0530

    Bug#17453826:ASSERTION ERROR WHEN SETTING FUTURE BINLOG
    FILE/POS WITH SEMISYNC

    Problem:
    ========
    When DMLs are in progress on the master stopping a slave and
    setting ahead binlog name/pos will cause an assert on the
    master.
    ...
This commit is contained in:
Sergei Golubchik
2015-02-20 19:01:03 +01:00
parent 22cf2f117a
commit b739103f12
3 changed files with 66 additions and 12 deletions
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28
sql/sql_repl.cc
View File

@ -1948,6 +1948,7 @@ void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos,
slave_connection_state until_gtid_state_obj;
rpl_gtid error_gtid;
binlog_send_info info(thd, packet, flags, log_file_name);
bool has_transmit_started= false;
int old_max_allowed_packet= thd->variables.max_allowed_packet;
@ -2007,16 +2008,6 @@ void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos,
DBUG_SET("+d,corrupt_read_log_event2");
});
if (global_system_variables.log_warnings > 1)
sql_print_information("Start binlog_dump to slave_server(%lu), pos(%s, %lu)",
thd->variables.server_id, log_ident, (ulong)pos);
if (RUN_HOOK(binlog_transmit, transmit_start, (thd, flags, log_ident, pos)))
{
errmsg= "Failed to run hook 'transmit_start'";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
#ifndef DBUG_OFF
if (opt_sporadic_binlog_dump_fail && (binlog_dump_count++ % 2))
{
@ -2113,6 +2104,17 @@ impossible position";
goto err;
}
if (global_system_variables.log_warnings > 1)
sql_print_information("Start binlog_dump to slave_server(%lu), pos(%s, %lu)",
thd->variables.server_id, log_ident, (ulong)pos);
if (RUN_HOOK(binlog_transmit, transmit_start, (thd, flags, log_ident, pos)))
{
errmsg= "Failed to run hook 'transmit_start'";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
has_transmit_started= true;
/* reset transmit packet for the fake rotate event below */
if (reset_transmit_packet(thd, flags, &ev_offset, &errmsg))
goto err;
@ -2680,7 +2682,8 @@ end:
end_io_cache(&log);
mysql_file_close(file, MYF(MY_WME));
RUN_HOOK(binlog_transmit, transmit_stop, (thd, flags));
if (has_transmit_started)
RUN_HOOK(binlog_transmit, transmit_stop, (thd, flags));
my_eof(thd);
THD_STAGE_INFO(thd, stage_waiting_to_finalize_termination);
mysql_mutex_lock(&LOCK_thread_count);
@ -2749,7 +2752,8 @@ err:
else
strcpy(error_text, errmsg);
end_io_cache(&log);
RUN_HOOK(binlog_transmit, transmit_stop, (thd, flags));
if (has_transmit_started)
RUN_HOOK(binlog_transmit, transmit_stop, (thd, flags));
/*
Exclude iteration through thread list
this is needed for purge_logs() - it will iterate through