diff options
| author | Alexey Botchkov <holyfoot@askmonty.org> | 2020-08-11 00:01:53 +0400 |
|---|---|---|
| committer | Alexey Botchkov <holyfoot@askmonty.org> | 2020-08-11 00:01:53 +0400 |
| commit | 19bdb03e97d6f760699cd718e11f71e01c268f5e (patch) | |
| tree | 3399b856c7bc246e3faec3cb1aad40badac8764a /sql/sql_show.cc | |
| parent | 0041dacc1b8e85e1958355d1cfdc36055b05a884 (diff) | |
| download | mariadb-git-bb-mdev21211-hf.tar.gz | |
MDEV-21211 LOCK_plugin optimization.bb-mdev21211-hf
Use Apc_target calls to 'notify' threads about changes in plugins.
Diffstat (limited to 'sql/sql_show.cc')
| -rw-r--r-- | sql/sql_show.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sql/sql_show.cc b/sql/sql_show.cc index ba895384c1a..dc7cf1b1e24 100644 --- a/sql/sql_show.cc +++ b/sql/sql_show.cc @@ -3010,6 +3010,12 @@ void Show_explain_request::call_in_target_thread() Query_arena backup_arena; bool printed_anything= FALSE; + if (target_thd->lex == NULL || target_thd->lex->explain == NULL || + !target_thd->lex->explain->query_plan_is_ready()) + { + failed_to_produce= TRUE; + return; + } /* Change the arena because JOIN::print_explain and co. are going to allocate items. Let them allocate them on our arena. |