Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.0.16, 10.1.34, 10.2.27
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Red Hat Enterprise Linux
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10.3.1-1
Description
DROP DATABASE IF EXSITS executed on database with more that several thousand tables and over several TBs data in it is unreasonably slow.
A huge amount of writing to disk has been observed too.
Crash description:
executed:
SET unique_checks = 0; SET foreign_key_checks = 0; SET GLOBAL innodb_stats_on_metadata = 0; DROP DATABASE IF EXISTS HUGE_TABLE'
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InnoDB: Error: semaphore wait has lasted > 600 seconds
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InnoDB: We intentionally crash the server, because it appears to be hung.
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2015-04-27 12:21:26 7f07de3ff700 InnoDB: Assertion failure in thread 139671770232576 in file srv0srv.cc line 2196
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InnoDB: We intentionally generate a memory trap.
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InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
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InnoDB: If you get repeated assertion failures or crashes, even
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InnoDB: immediately after the mysqld startup, there may be
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InnoDB: corruption in the InnoDB tablespace. Please refer to
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InnoDB: http://dev.mysql.com/doc/refman/5.6/en/forcing-innodb-recovery.html
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InnoDB: about forcing recovery.
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150427 12:21:26 [ERROR] mysqld got signal 6 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see http://kb.askmonty.org/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.0.16-MariaDB-log
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key_buffer_size=53687091200
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read_buffer_size=131072
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max_used_connections=42
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max_threads=402
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thread_count=21
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 52900205 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x0x0
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x0 thread_stack 0x48000
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/usr/sbin/mysqld(my_print_stacktrace+0x2b)[0xb73d3b]
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/usr/sbin/mysqld(handle_fatal_signal+0x398)[0x726518]
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/lib64/libpthread.so.0(+0xf710)[0x7f5096c43710]
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/lib64/libc.so.6(gsignal+0x35)[0x7f509529f625]
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/lib64/libc.so.6(abort+0x175)[0x7f50952a0e05]
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/usr/sbin/mysqld[0x936f9c]
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/lib64/libpthread.so.0(+0x79d1)[0x7f5096c3b9d1]
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/lib64/libc.so.6(clone+0x6d)[0x7f50953558fd]
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
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information that should help you find out what is causing the crash.
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150427 12:48:54 mysqld_safe Number of processes running now: 0
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150427 12:48:54 mysqld_safe mysqld restarted
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150427 12:49:16 [Note] InnoDB: Using mutexes to ref count buffer pool pages
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150427 12:49:16 [Note] InnoDB: The InnoDB memory heap is disabled
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150427 12:49:16 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
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150427 12:49:16 [Note] InnoDB: Memory barrier is not used
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150427 12:49:16 [Note] InnoDB: Compressed tables use zlib 1.2.3
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150427 12:49:16 [Note] InnoDB: Using Linux native AIO
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150427 12:49:16 [Note] InnoDB: Using CPU crc32 instructions
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150427 12:49:16 [Note] InnoDB: Initializing buffer pool, size = 225.0G
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150427 12:49:27 [Note] InnoDB: Completed initialization of buffer pool
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150427 12:49:29 [Note] InnoDB: Highest supported file format is Barracuda.
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150427 12:49:29 [Note] InnoDB: Log scan progressed past the checkpoint lsn 277389716102041
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150427 12:49:29 [Note] InnoDB: Database was not shutdown normally!
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150427 12:49:29 [Note] InnoDB: Starting crash recovery.
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150427 12:49:29 [Note] InnoDB: Reading tablespace information from the .ibd files...
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(END)
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Please do not ignore the Feature Request for optimizing the DROP DATABASE operation, even this ticket is marked as a bug.
Attachments
Issue Links
- is blocked by
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MDEV-14585 Automatically remove #sql- tables in innodb dictionary during recovery
- Closed
- relates to
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MDEV-11655 Transactional data dictionary
- Open
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MDEV-18518 Implement atomic multi-table (or multi-partition) CREATE TABLE for InnoDB
- Closed
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MDEV-18572 Thread executing DROP TABLE listed twice in SHOW ENGINE INNODB STATUS output
- Open
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MDEV-18613 Optimization for dropping table
- Closed
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MDEV-19552 DROP TABLE locks SHOW CREATE TABLE and SELECT with sorting since 10.1.34
- Closed
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MDEV-22456 Dropping the adaptive hash index may cause DDL to lock up InnoDB
- Closed
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MDEV-32786 Support NBO for DROP TABLE in Galera
- Open
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MDEV-9459 Truncate table causes innodb stalls
- Closed
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MDEV-16796 TRUNCATE TABLE slowdown with innodb_file_per_table=ON
- Closed
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MDEV-34988 InnoDB locks dict_sys.latch for a long time during ALTER TABLE
- Open
- links to