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A test occasionally fails like this:
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10.4 2dd6cd5f15f9996f38b4fcba890a237d69041d5a
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innodb.undo_truncate_recover '2,4k,innodb' w28 [ fail ]
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Test ended at 2018-11-27 09:27:05
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CURRENT_TEST: innodb.undo_truncate_recover
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…
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2018-11-27 9:27:03 0 [Note] InnoDB: Opened 2 undo tablespaces
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2018-11-27 9:27:03 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=22827480
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2018-11-27 9:27:04 0 [Note] InnoDB: Starting a batch to recover 3004 pages from redo log.
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mysqld: /mariadb/10.4/storage/innobase/log/log0recv.cc:258: void recv_addr_trim(ulint, unsigned int, lsn_t): Assertion `file->is_open()' failed.
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In a release build, the impact of this would be calling ftruncate() or SetFilePointerEx() on OS_FILE_CLOSED, and thus failing to shrink the file:
fil_node_t* file = UT_LIST_GET_FIRST(space->chain);
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ut_ad(file->is_open());
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os_file_truncate(file->name, file->handle,
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os_offset_t(pages) << srv_page_size_shift,
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true);
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There is no guarantee that the undo tablespace file would be open at this point. srv_undo_tablespace_open() is opening and immediately closing the file, without assigning fil_node_t::handle.
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