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10.0/sql/protocol.cc:522: void Protocol::end_statement(): Assertion `0' failed. 150424 18:45:26 [ERROR] mysqld got signal 6 ; #6 0x00007f1cfb0c2311 in *__GI___assert_fail (assertion=0xee5f70 "0", file=<optimized out>, line=522, function=0xee7480 "void Protocol::end_statement()") at assert.c:81 #7 0x00000000005d36ab in Protocol::end_statement (this=0x7f1ce2bf85f8) at 10.0/sql/protocol.cc:522 #8 0x000000000067af47 in dispatch_command (command=COM_QUERY, thd=0x7f1ce2bf8070, packet=0x7f1ce2a18071 "CREATE VIEW v12 AS SELECT 1", packet_length=27) at 10.0/sql/sql_parse.cc:1721 #9 0x0000000000678eaf in do_command (thd=0x7f1ce2bf8070) at 10.0/sql/sql_parse.cc:996 #10 0x00000000007966bf in do_handle_one_connection (thd_arg=0x7f1ce2bf8070) at 10.0/sql/sql_connect.cc:1375 #11 0x0000000000796412 in handle_one_connection (arg=0x7f1ce2bf8070) at 10.0/sql/sql_connect.cc:1289 #12 0x00007f1cfcebcb50 in start_thread (arg=<optimized out>) at pthread_create.c:304 #13 0x00007f1cfb17295d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
Perl testcase
# It assumes the debug server is running on port 3306. # All default options are enough use DBD::mysql; use Carp; my $pid = fork(); if ($pid) { sleep 1; my $dbh = DBI->connect("dbi:mysql:host=127.0.0.1:port=3306:user=root:database=test", undef, undef, { RaiseError => 1 } ); foreach (1..100) { $dbh->do("CREATE OR REPLACE VIEW v AS SELECT 1"); } $dbh->do("shutdown"); print "All done.\n"; } elsif ($pid == 0) { my $dbh = DBI->connect("dbi:mysql:host=127.0.0.1:port=3306:user=root:database=test", undef, undef, { RaiseError => 1 } ); sleep 2; croak "$$ Aborting now"; } else { die "Could not fork"; }
Apparently the problem appeared in 10.0 tree with the following revision:
commit 919443f7a553534de38d40a5cdf50cd3660ace1a
Author: Sergei Golubchik <sergii@pisem.net>
Date: Mon Jan 19 16:11:48 2015 +0100
MDEV-5679 MariaDB holds stdin open after startup as mysqld
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index e0eaf55..7138027 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -5527,6 +5527,7 @@ int mysqld_main(int argc, char **argv)
(char*) "" : mysqld_unix_port),
mysqld_port,
MYSQL_COMPILATION_COMMENT);
+ fclose(stdin);
#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
Service.SetRunning();
#endif
Same happens on CREATE TRIGGER.
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Perl version maybe? Or system specifics?
I've set it up on perro, current 10.0 branch.
Login as usual.
cd mdev8045
./run.sh
It starts the server on port 8045 and runs the perl script. Output that indicates the problem:
Server command line: /home/mariadb/mdev8045/10.0/sql/mysqld --no-defaults --basedir=/home/mariadb/mdev8045/10.0 --datadir=/home/mariadb/mdev8045/data --log-error=/home/mariadb/mdev8045/data/log.err --loose-lc-messages-dir=/home/mariadb/mdev8045/10.0/sql/share --port=8045 --socket=/home/mariadb/mdev8045/data/tmp/mysql.sock --tmpdir=/home/mariadb/mdev8045/data/tmp --core-file ... ... mysqld is alive Now running the test... 55616 Aborting now at /home/mariadb/mdev8045/test.pl line 21 DBD::mysql::db do failed: Lost connection to MySQL server during query at /home/mariadb/mdev8045/test.pl line 13. DBD::mysql::db do failed: Lost connection to MySQL server during query at /home/mariadb/mdev8045/test.pl line 13. ./run.sh: line 32: 55580 Aborted (core dumped) $cmd
Happens every time for me.
I've fixed it, but I could not create a deterministic test case that would work on my laptop. Elena Stepanova, if you'd like to try — go ahead, otherwise I'll just push the fix.
I already tried very hard and failed before giving up and providing just the ugly perl script – so, please push the fix.
I cannot repeat it in 10.0. Any ideas?