mysqld: /home/buildbot/buildbot/build/mariadb-10.0.31/sql/rpl_parallel.cc:1869: rpl_parallel_thread* rpl_parallel_thread_pool::get_thread(rpl_parallel_thread**, rpl_parallel_entry*): Assertion `count > 0' failed.
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170517 9:46:31 [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 https://mariadb.com/kb/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: 10.0.31-MariaDB-debug
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key_buffer_size=1048576
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read_buffer_size=131072
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max_used_connections=5
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max_threads=153
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thread_count=5
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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 = 61724 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: 0xa1085b0
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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 = 0xa8a24e20 thread_stack 0x48000
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mysys/stacktrace.c:267(my_print_stacktrace)[0x8a89035]
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sql/signal_handler.cc:161(handle_fatal_signal)[0x8473d87]
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[0xb7724400]
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[0xb7724424]
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/lib/i386-linux-gnu/libc.so.6(gsignal+0x4f)[0xb72001ef]
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/lib/i386-linux-gnu/libc.so.6(abort+0x175)[0xb7203835]
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/lib/i386-linux-gnu/libc.so.6(+0x27095)[0xb71f9095]
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/lib/i386-linux-gnu/libc.so.6(+0x27147)[0xb71f9147]
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sql/rpl_parallel.cc:1870(rpl_parallel_thread_pool::get_thread(rpl_parallel_thread**, rpl_parallel_entry*))[0x8402a37]
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sql/rpl_parallel.cc:2012(rpl_parallel_entry::choose_thread(rpl_group_info*, bool*, PSI_stage_info_v1*, bool))[0x8402f58]
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sql/rpl_parallel.cc:2543(rpl_parallel::do_event(rpl_group_info*, Log_event*, unsigned long long))[0x840414b]
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sql/slave.cc:3581(exec_relay_log_event)[0x81e9613]
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sql/slave.cc:4752(handle_slave_sql)[0x81ece54]
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perfschema/pfs.cc:1862(pfs_spawn_thread)[0x863e698]
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/lib/i386-linux-gnu/libpthread.so.0(+0x6d4c)[0xb76b3d4c]
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/lib/i386-linux-gnu/libc.so.6(clone+0x5e)[0xb72bcace]
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Trying to get some variables.
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Some pointers may be invalid and cause the dump to abort.
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Query (0x0):
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Connection ID (thread ID): 981
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Status: NOT_KILLED
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