Marko Mäkelä 6d1f1b61b5 MDEV-24564 Statistics are lost after ALTER TABLE ...

Ever since commit 007f68c37f,
ALTER TABLE no longer invokes handler::open() after
handler::commit_inplace_alter_table().

ha_innobase::reload_statistics(): Reload or recompute statistics
after ALTER TABLE.

innodb_notify_tabledef_changed(): A new function to invoke
ha_innobase::reload_statistics().

handlerton::notify_tabledef_changed(): Add the parameter handler*
so that ha_innobase::reload_statistics() can be invoked.

ha_partition::notify_tabledef_changed(),
partition_notify_tabledef_changed(): Pass through the call
to any partitions or subpartitions.

This is based on code that was supplied by Monty.

2021-01-28 14:15:01 +02:00

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