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Note: We have numerous open bugs with this generic assertion failure, but none of them is related to events, and I've been encountering it a lot upon killing CREATE EVENT, so possibly there is something specific to it.
Note: The test case is non-deterministic, run with --repeat=N. It usually fails for me within ~10 attempts on 10.x, takes a little longer on 5.5; but it can vary on different machines and builds.
--connect (con1,localhost,root,,test)
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--let $conid= `SELECT CONNECTION_ID()`
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--send
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CREATE EVENT ev ON SCHEDULE EVERY 10 SECOND DO SET @a=1;
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--connection default
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SELECT 1;
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--eval KILL QUERY $conid
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--connection con1
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--error 0,ER_QUERY_INTERRUPTED
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--reap
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--disconnect con1
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--connection default
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DROP EVENT IF EXISTS ev;
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10.4 9afbb106
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mysqld: /data/src/10.4/sql/sql_error.cc:335: void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*): Assertion `!is_set() || (m_status == DA_OK_BULK && is_bulk_op())' failed.
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191027 17:35:19 [ERROR] mysqld got signal 6 ;
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#6 0x00007fbac13f2e67 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x559d7f580340 "!is_set() || (m_status == DA_OK_BULK && is_bulk_op())", file=file@entry=0x559d7f580288 "/data/src/10.4/sql/sql_error.cc", line=line@entry=335, function=function@entry=0x559d7f580680 <Diagnostics_area::set_ok_status(unsigned long long, unsigned long long, char const*)::__PRETTY_FUNCTION__> "void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*)") at assert.c:92
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#7 0x00007fbac13f2f12 in __GI___assert_fail (assertion=0x559d7f580340 "!is_set() || (m_status == DA_OK_BULK && is_bulk_op())", file=0x559d7f580288 "/data/src/10.4/sql/sql_error.cc", line=335, function=0x559d7f580680 <Diagnostics_area::set_ok_status(unsigned long long, unsigned long long, char const*)::__PRETTY_FUNCTION__> "void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*)") at assert.c:101
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#8 0x0000559d7e8400c0 in Diagnostics_area::set_ok_status (this=0x7fbaa40064d0, affected_rows=0, last_insert_id=0, message=0x0) at /data/src/10.4/sql/sql_error.cc:335
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#9 0x0000559d7e7e4646 in my_ok (thd=0x7fbaa4000b00, affected_rows_arg=0, id=0, message=0x0) at /data/src/10.4/sql/sql_class.h:5005
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#10 0x0000559d7e89a144 in mysql_execute_command (thd=0x7fbaa4000b00) at /data/src/10.4/sql/sql_parse.cc:5165
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#11 0x0000559d7e8a3ac5 in mysql_parse (thd=0x7fbaa4000b00, rawbuf=0x7fbaa4011d88 "CREATE EVENT ev ON SCHEDULE EVERY 10 SECOND DO SET @a=1", length=55, parser_state=0x7fbab7535170, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7912
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#12 0x0000559d7e88ed58 in dispatch_command (command=COM_QUERY, thd=0x7fbaa4000b00, packet=0x7fbaa4008351 "CREATE EVENT ev ON SCHEDULE EVERY 10 SECOND DO SET @a=1", packet_length=55, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1841
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#13 0x0000559d7e88d3e5 in do_command (thd=0x7fbaa4000b00) at /data/src/10.4/sql/sql_parse.cc:1359
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#14 0x0000559d7ea14e17 in do_handle_one_connection (connect=0x559d8193ae60) at /data/src/10.4/sql/sql_connect.cc:1412
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#15 0x0000559d7ea14b66 in handle_one_connection (arg=0x559d8193ae60) at /data/src/10.4/sql/sql_connect.cc:1316
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#16 0x0000559d7f417aa5 in pfs_spawn_thread (arg=0x559d8185fa60) at /data/src/10.4/storage/perfschema/pfs.cc:1862
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#17 0x00007fbac2f684a4 in start_thread (arg=0x7fbab7536700) at pthread_create.c:456
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#18 0x00007fbac14afd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
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uery (0x7fbaa4011d88): CREATE EVENT ev ON SCHEDULE EVERY 10 SECOND DO SET @a=1
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Connection ID (thread ID): 25
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Status: KILL_QUERY
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Reproducible on all of MariaDB 5.5-10.5. Also reproducible on MySQL 5.6 and 5.7; I didn't try MySQL 5.5 and couldn't reproduce on MySQL 8.0, I assume it's fixed there.
No obvious effect on a non-debug build.
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