From 41208f6e5b53db6fda2c9b6a6cfd6158c85e46b8 Mon Sep 17 00:00:00 2001
From: Sergey Petrunya <psergey@askmonty.org>
Date: Tue, 21 Jan 2014 14:02:56 +0400
Subject: [PATCH] MDEV-5426: Assertion `toku_ft_needed_unlocked(src_h)' failed
 (errno=11) ... - the problem was caused by EXPLAIN INSERT SELECT. For that
 statement,   the code would call select_insert::prepare2(), which would call 
  handler->ha_start_bulk_insert().  The corresponding
 handler->end_bulk_insert()   call is made from select_insert::send_eof or
 select_insert::abort_result_set   which are never called for EXPLAIN INSERT
 SELECT. - Fixed by re-using approach of mysql-5.6: don't call
 ha_start_bulk_insert() if   we are in EXPLAIN.

---
 sql/sql_insert.cc                                      |  3 ++-
 .../tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result |  6 ++++++
 .../tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test   | 10 ++++++++++
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result
 create mode 100644 storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test

diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index 0acb7e747ad..b764263265e 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -3555,7 +3555,8 @@ int select_insert::prepare2(void)
 {
   DBUG_ENTER("select_insert::prepare2");
   if (thd->lex->current_select->options & OPTION_BUFFER_RESULT &&
-      thd->locked_tables_mode <= LTM_LOCK_TABLES)
+      thd->locked_tables_mode <= LTM_LOCK_TABLES &&
+      !thd->lex->describe)
     table->file->ha_start_bulk_insert((ha_rows) 0);
   DBUG_RETURN(0);
 }
diff --git a/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result b/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result
new file mode 100644
index 00000000000..086c4f4cc18
--- /dev/null
+++ b/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result
@@ -0,0 +1,6 @@
+CREATE TABLE t1 (i INT) ENGINE=TokuDB;
+EXPLAIN INSERT INTO t1 SELECT * FROM t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	1	Using temporary
+INSERT INTO t1 SELECT * FROM t1;
+DROP TABLE t1;
diff --git a/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test b/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test
new file mode 100644
index 00000000000..b16e81353ff
--- /dev/null
+++ b/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test
@@ -0,0 +1,10 @@
+
+CREATE TABLE t1 (i INT) ENGINE=TokuDB;
+EXPLAIN INSERT INTO t1 SELECT * FROM t1;
+
+--connect con1,localhost,root,,test
+INSERT INTO t1 SELECT * FROM t1;
+
+--connection default
+--disconnect con1
+DROP TABLE t1;