This is a regression caused by
commit 8c43f963
that was part of the MDEV-12112 fixes.

page_is_corrupted(): Never interpret page_no=0 as encrypted.

This is a regression after MDEV-13671.

The bug is related to key part prefix lengths wich are stored in SYS_FIELDS.
Storage format is not obvious and was handled incorrectly which led to data
dictionary corruption.

SYS_FIELDS.POS actually contains prefix length too in case if any key part
has prefix length.

innobase_rename_column_try(): fixed prefixes handling

Tests for prefixed indexes added too.

Closes #1063

would not hide more interesting information, like invalid memory accesses.


some "leaks" are expected
- partly this is due to weird options parsing, that runs twice, and
does not free memory after the first run.
- also we do not mind to exit()  whenever it makes sense, without full
cleanup.

MDEV-17470 Orphan temporary files after interrupted ALTER cause InnoDB: Operating system error number 17 and eventual fatal error 71

Orphan #sql* tables may remain after ALTER TABLE
was interrupted by timeout or KILL or client disconnect.

This is a regression caused by MDEV-16515.

Similar to temporary tables (MDEV-16647), we had better ignore the
KILL when dropping the original table in the final part of ALTER TABLE.

Closes #1020

This fixes a regression that was introduced in MySQL 5.6.6
in an error handling code path, in the following change:

commit 024f363d6b5f09b20d1bba411af55be95c7398d3
Author: kevin.lewis@oracle.com <>
Date:   Fri Jun 15 09:01:42 2012 -0500

    Bug #14169459 INNODB; DROP TABLE DOES NOT DELETE THE IBD FILE
    FOR A TEMPORARY TABLE.

Now that InnoDB startup drops tables whose name starts with #sql,
the table ID alone should be enough to create a unique table name.

dict_temp_file_num, dict_mem_init(): Remove.

dict_mem_create_temporary_tablename(): Use a combination of
"#sql-ib" and the ID of the table that is being rebuilt
in TRUNCATE TABLE, or discarded in the commit of table-rebuilding
ALTER TABLE...ALGORITHM=INPLACE, or deferred to the DROP queue.

Thanks to Sergey Vojtovich for pointing this out.

fix the AWS SDK build eligibility checks.

followup for 779151db

MDEV-18064: Packaging is broken for debian-based systems

Packaging is broken for debian-based systems after removing
xtrabackup scripts. This is due to the fact that links to the
scripts are not removed from the installation file
(from the debian/mariadb-server-10.3.install).

Also in this fix some comments have been added to the
documentation, indicating that using xtrabackup[-v2] is
an deprecated, therefore user should use mariabackup instead.

https://jira.mariadb.org/browse/MDEV-18064

Docs grammar fixed

Add check for git command and test for internet connectivity
using bash /dev/tcp interface, instead of wget and curl which might
not be available, thus reducing dependencies for this script.

update engines/ suites

followup for c4ab352b

it's listed in MYSQL_ADD_PLUGIN() declaration,
so it must always exist, jemalloc or not.

btr_node_ptr_max_size(): Do not reserve extra space for indexed VARCHAR(0)
columns.