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  1. MariaDB Server
  2. MDEV-13059

XtraDB hangs on Windows due to failing to release block->lock X-latch in innodb_read_only mode

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      The recently added test innodb.row_format_redundant hangs on XtraDB on Windows. InnoDB and other platforms than Windows seem to be fine.

      Here is the problematic section:

      SET GLOBAL innodb_fast_shutdown=0;
      --let $restart_parameters = --innodb-read-only
      --source include/restart_mysqld.inc
       
      SELECT COUNT(*) FROM t1;
      

      The query is blocked while trying to acquire an S-latch on a block->lock on a clustered index page. The X-latch was acquired by buf_page_init_for_read(), and normally it should be released by buf_page_io_complete(). Added debug output in that function confirms that the function was being invoked for some pages, but not this one.

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              • Assignee:
                wlad Vladislav Vaintroub
                Reporter:
                marko Marko Mäkelä
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