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Merge 10.3 into 10.4

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This commit is contained in:
Marko Mäkelä
2019-05-29 22:17:00 +03:00
parent e35676f555 e99ed820d7
commit f98bb23168
97 changed files with 2902 additions and 1335 deletions
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15
sql/temporary_tables.cc
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@ -1,5 +1,5 @@
/*
Copyright (c) 2016 MariaDB Corporation
Copyright (c) 2016, 2019, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -377,6 +377,19 @@ bool THD::open_temporary_table(TABLE_LIST *tl)
if (!table && (share= find_tmp_table_share(tl)))
{
table= open_temporary_table(share, tl->get_table_name());
/*
Temporary tables are not safe for parallel replication. They were
designed to be visible to one thread only, so have no table locking.
Thus there is no protection against two conflicting transactions
committing in parallel and things like that.
So for now, anything that uses temporary tables will be serialised
with anything before it, when using parallel replication.
*/
if (table && rgi_slave &&
rgi_slave->is_parallel_exec &&
wait_for_prior_commit())
DBUG_RETURN(true);
}
if (!table)