Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.2.21
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None
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Debian Stretch
Description
I installed MariaDB 10.2.21 from Debian Stretch packages on MariaDB.org.
I also installed server debug symbols, as well as MyRocks together with its debug symbols:
sudo apt-get install mariadb-server-10.2-dbgsym
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sudo apt-get install mariadb-plugin-rocksdb mariadb-plugin-rocksdb-dbgsym
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I start mariadb server, start the client, run there
"select sleep(100) + sleep(2000);" , it is hanging.
Then I start gdb and attach to the mysqld process. Let's check if we have line numbers in debug symbols:
(gdb) thread apply all where 5
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...
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Thread 7 (Thread 0x7f45a48d2700 (LWP 7235)):
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#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
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#1 0x00007f45a6cf436a in inline_mysql_cond_timedwait (src_file=0x7f45a6fd48c8 "/home/buildbot/buildbot/build/mariadb-10.2.21/storage/rocksdb/ha_rocksdb.cc",
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src_line=11314, abstime=0x7f45a48d1bd0, mutex=0x7f45a72c3698 <myrocks::rdb_drop_idx_thread+56>, that=0x7f45a72c36c8 <myrocks::rdb_drop_idx_thread+104>)
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at ./include/mysql/psi/mysql_thread.h:1186
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#2 myrocks::Rdb_drop_index_thread::run (this=0x7f45a72c3660 <myrocks::rdb_drop_idx_thread>) at ./storage/rocksdb/ha_rocksdb.cc:11314
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#3 0x00007f45a6d32322 in myrocks::Rdb_thread::thread_func (thread_ptr=0x7f45a72c3660 <myrocks::rdb_drop_idx_thread>) at ./storage/rocksdb/rdb_threads.cc:34
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#4 0x00007f45b1456494 in start_thread (arg=0x7f45a48d2700) at pthread_create.c:333
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(More stack frames follow...)
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ha_rocksdb.cc:11314, Good!.
But this is ony for MyRocks. For SQL layer, no luck:
Thread 38 (Thread 0x7f4595ac7700 (LWP 7276)):
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#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
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#1 0x000055c6e19ba7cf in Interruptible_wait::wait(st_mysql_cond*, st_mysql_mutex*) ()
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#2 0x000055c6e19ba99e in Item_func_sleep::val_int() ()
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#3 0x000055c6e19b6fed in Item_func_plus::int_op() ()
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#4 0x000055c6e19b418c in Item_func_hybrid_field_type::val_int() ()
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(More stack frames follow...)
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Function names are here but we also MUST have line numbers as otherwise, it's impossible to diagnose any bugs.
Attachments
Issue Links
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- Closed
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