Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.4(EOL)
Description
Seen with some regularity in [recent or 10.4] test runs;
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10.4.15 eae968f62d285de97ed607c87bc131cd863d5d03 (Debug) |
... innodb monitor output ...
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2020-08-11 21:48:20 0 [Note] /test/MD110820-mariadb-10.4.15-linux-x86_64-dbg/bin/mysqld (initiated by: root[root] @ localhost []): Normal shutdown
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2020-08-11 21:48:20 0 [Note] WSREP: Shutdown replication
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2020-08-11 21:48:20 0 [Note] WSREP: killing local connection: 12
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mysqld: /test/10.4_dbg/include/mysql/psi/mysql_socket.h:744: inline_mysql_socket_send: Assertion `mysql_socket.fd != -1' failed.
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200811 21:48:20 [ERROR] mysqld got signal 6 ;
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jplindst any idea what happens here?
Very hard to reproduce. Seems WSREP kills a connection and server does subsequently assert. I am attaching full details (full trial, core dump, data dir, logs). Core can be debugged as follows:
mv mysqld .. # mysqld bin copy + libs directory
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./gdb
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Or
gdb ./mysqld/mysqld ./data/core
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Error log in log/master.err, used sql in default.node.tld_thread-0.sql (55k lines, not reducible as bug will not reproduce likely due to some 'required state' or 'timing' or 'os slicing' issue.
Attachments
Issue Links
- relates to
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- Closed
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Activity
- How to repeat: ./mtr galera_sr.galera_sr_cc_master --repeat=2000
- Query: SET GLOBAL wsrep_cluster_address = '''
- thd->killed : KILL_CONNECTION
jplindst thank you for the core analysis and testcase.
mkaruza It will be super great to see this mysql_socket.fd Unable to render embedded object: File (= -1 issue resolved as I see many tests fail with similar assertion message, and I suspect they are various issues (potentially not related to wsrep at all?). Thank you) not found.
Question; do you think this issue is present in 10.5 as well?
I have updated the pull request with a suggestion for a better fix.
It fails sporadically on galera_sr.galera_sr_cc_master MTR, see
MDEV-23609.