2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
2018-07-20 11:54:45 128684013562112 [ERROR] Error in accept: Bad file descriptor
/home/buildbot/buildbot/build/mariadb-10.1.32/storage/tokudb/ha_tokudb.cc:1315 open_main_dictionary: Assertion `Handlerton: share->file == NULL ' failed (errno=0)
: Success
Backtrace: (Note: toku_do_assert=0x0x75099093f920)
/usr/lib/mysql/plugin/ha_tokudb.so(_Z19db_env_do_backtraceP8_IO_FILE+0x2e)[0x75099093f3ce]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x130503)[0x75099093f503]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x13067e)[0x75099093f67e]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x84bf8)[0x750990893bf8]
/usr/lib/mysql/plugin/ha_tokudb.so(_Z21toku_hton_assert_failPKcS0_S0_ii+0x88)[0x75099085ffc8]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb20open_main_dictionaryEPKcbP13__toku_db_txn+0x2d1)[0x750990879471]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb16initialize_shareEPKci+0x1c3)[0x750990885c23]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb4openEPKcij+0x4c4)[0x7509908866b4]
/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcij+0x33)[0xbb03f9d6633]
/usr/sbin/mysqld(+0xa2b855)[0xbb03fe5b855]
/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcij+0x33)[0xbb03f9d6633]
/usr/sbin/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPKcjjjP5TABLEb+0xb29)[0xbb03f8ed869]
/usr/sbin/mysqld(_Z10open_tableP3THDP10TABLE_LISTP18Open_table_context+0xade)[0xbb03f7f4dde]
/usr/sbin/mysqld(_Z11open_tablesP3THDRK14DDL_options_stPP10TABLE_LISTPjjP19Prelocking_strategy+0xab2)[0xbb03f7f9142]
/usr/sbin/mysqld(_Z30open_normal_and_derived_tablesP3THDP10TABLE_LISTjj+0x59)[0xbb03f7f9ca9]
/usr/sbin/mysqld(+0x470199)[0xbb03f8a0199]
/usr/sbin/mysqld(_Z14get_all_tablesP3THDP10TABLE_LISTP4Item+0x7e0)[0xbb03f8b3300]
/usr/sbin/mysqld(_Z24get_schema_tables_resultP4JOIN23enum_schema_table_state+0x296)[0xbb03f8b4df6]
/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0x71d)[0xbb03f89972d]
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x54)[0xbb03f89ba74]
/usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xe7)[0xbb03f898227]
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x139)[0xbb03f898bf9]
/usr/sbin/mysqld(+0x354a78)[0xbb03f784a78]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x71bb)[0xbb03f8422cb]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x311)[0xbb03f8444d1]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x25a0)[0xbb03f847b80]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x219)[0xbb03f848439]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x182)[0xbb03f916dd2]
/usr/sbin/mysqld(handle_one_connection+0x40)[0xbb03f916f70]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7509937b46ba]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x750992e5f41d]
Engine status:
BUILD_ID = 0
Env panic code: 18446744073709551615
Env panic string: /home/buildbot/buildbot/build/mariadb-10.1.32/storage/tokudb/ha_tokudb.cc:1315 open_main_dictionary: Assertion `Handlerton: share->file == NULL ' failed (errno=0)

time of environment creation: Sun Nov 27 16:33:50 2016
time of engine startup: Fri Jul 20 11:47:07 2018
time now: Fri Jul 20 11:54:51 2018
db opens: 9616
db closes: 16
num open dbs now: 9600
max open dbs: 9601
period, in ms, that recovery log is automatically fsynced: 0
dictionary inserts: 0
dictionary inserts fail: 0
dictionary deletes: 1608
dictionary deletes fail: 0
dictionary updates: 0
dictionary updates fail: 0
dictionary broadcast updates: 0
dictionary broadcast updates fail: 0
dictionary multi inserts: 0
dictionary multi inserts fail: 0
dictionary multi deletes: 0
dictionary multi deletes fail: 0
dictionary updates multi: 0
dictionary updates multi fail: 0
le: max committed xr: 1
le: max provisional xr: 2
le: expanded: 0
le: max memsize: 68
le: size of leafentries before garbage collection (during message application): 1228139
le: size of leafentries after garbage collection (during message application): 411345
le: size of leafentries before garbage collection (outside message application): 0
le: size of leafentries after garbage collection (outside message application): 0
checkpoint: period: 60
checkpoint: footprint: 40
checkpoint: last checkpoint began: Fri Jul 20 11:54:08 2018
checkpoint: last complete checkpoint began: Fri Jul 20 11:53:08 2018
checkpoint: last complete checkpoint ended: Fri Jul 20 11:53:09 2018
checkpoint: time spent during checkpoint (begin and end phases): 16
checkpoint: time spent during last checkpoint (begin and end phases): 1
checkpoint: last complete checkpoint LSN: 28153374688
checkpoint: checkpoints taken : 7
checkpoint: checkpoints failed: 0
checkpoint: waiters now: 0
checkpoint: waiters max: 0
checkpoint: non-checkpoint client wait on mo lock: 0
checkpoint: non-checkpoint client wait on cs lock: 0
checkpoint: checkpoint begin time: 18896
checkpoint: long checkpoint begin time: 0
checkpoint: long checkpoint begin count: 0
checkpoint: checkpoint end time: 18624856
checkpoint: long checkpoint end time: 0
checkpoint: long checkpoint end count: 0
cachetable: miss: 5071
cachetable: miss time: 1000742
cachetable: prefetches: 182
cachetable: size current: 1199698716
cachetable: size limit: 34896609280
cachetable: size writing: 0
cachetable: size nonleaf: 60687158
cachetable: size leaf: 1139009286
cachetable: size rollback: 2272
cachetable: size cachepressure: 58825654
cachetable: size currently cloned data for checkpoint: 0
cachetable: evictions: 0
cachetable: cleaner executions: 716
cachetable: cleaner period: 1
cachetable: cleaner iterations: 5
cachetable: number of waits on cache pressure: 0
cachetable: time waiting on cache pressure: 0
cachetable: number of long waits on cache pressure: 0
cachetable: long time waiting on cache pressure: 0
cachetable: client pool: number of threads in pool: 12
cachetable: client pool: number of currently active threads in pool: 0
cachetable: client pool: number of currently queued work items: 0
cachetable: client pool: largest number of queued work items: 0
cachetable: client pool: total number of work items processed: 0
cachetable: client pool: total execution time of processing work items: 0
cachetable: cachetable pool: number of threads in pool: 24
cachetable: cachetable pool: number of currently active threads in pool: 0
cachetable: cachetable pool: number of currently queued work items: 0
cachetable: cachetable pool: largest number of queued work items: 1
cachetable: cachetable pool: total number of work items processed: 189
cachetable: cachetable pool: total execution time of processing work items: 1291
cachetable: checkpoint pool: number of threads in pool: 3
cachetable: checkpoint pool: number of currently active threads in pool: 0
cachetable: checkpoint pool: number of currently queued work items: 0
cachetable: checkpoint pool: largest number of queued work items: 0
cachetable: checkpoint pool: total number of work items processed: 0
cachetable: checkpoint pool: total execution time of processing work items: 0
locktree: memory size: 96
locktree: memory size limit: 4294967296
locktree: number of times lock escalation ran: 0
locktree: time spent running escalation (seconds): 0.000000
locktree: latest post-escalation memory size: 0
locktree: number of locktrees open now: 9602
locktree: number of pending lock requests: 0
locktree: number of locktrees eligible for the STO: 1
locktree: number of times a locktree ended the STO early: 1596
locktree: time spent ending the STO early (seconds): 0.027879
locktree: number of wait locks: 0
locktree: time waiting for locks: 0
locktree: number of long wait locks: 0
locktree: long time waiting for locks: 0
locktree: number of lock timeouts: 0
locktree: number of waits on lock escalation: 0
locktree: time waiting on lock escalation: 0
locktree: number of long waits on lock escalation: 0
locktree: long time waiting on lock escalation: 0
ft: dictionary updates: 0
ft: dictionary broadcast updates: 0
ft: descriptor set: 0
ft: messages ignored by leaf due to msn: 2055
ft: total search retries due to TRY_AGAIN: 6701
ft: searches requiring more tries than the height of the tree: 1
ft: searches requiring more tries than the height of the tree plus three: 0
ft: leaf nodes flushed to disk (not for checkpoint): 2
ft: leaf nodes flushed to disk (not for checkpoint) (bytes): 1024
ft: leaf nodes flushed to disk (not for checkpoint) (uncompressed bytes): 550
ft: leaf nodes flushed to disk (not for checkpoint) (seconds): 0.000078
ft: nonleaf nodes flushed to disk (not for checkpoint): 0
ft: nonleaf nodes flushed to disk (not for checkpoint) (bytes): 0
ft: nonleaf nodes flushed to disk (not for checkpoint) (uncompressed bytes): 0
ft: nonleaf nodes flushed to disk (not for checkpoint) (seconds): 0.000000
ft: leaf nodes flushed to disk (for checkpoint): 1657
ft: leaf nodes flushed to disk (for checkpoint) (bytes): 30940672
ft: leaf nodes flushed to disk (for checkpoint) (uncompressed bytes): 102086352
ft: leaf nodes flushed to disk (for checkpoint) (seconds): 0.313292
ft: nonleaf nodes flushed to disk (for checkpoint): 128
ft: nonleaf nodes flushed to disk (for checkpoint) (bytes): 22239744
ft: nonleaf nodes flushed to disk (for checkpoint) (uncompressed bytes): 64555364
ft: nonleaf nodes flushed to disk (for checkpoint) (seconds): 0.098578
ft: uncompressed / compressed bytes written (leaf): UNKNOWN STATUS TYPE: 6
ft: uncompressed / compressed bytes written (nonleaf): UNKNOWN STATUS TYPE: 6
ft: uncompressed / compressed bytes written (overall): UNKNOWN STATUS TYPE: 6
ft: nonleaf node partial evictions: 0
ft: nonleaf node partial evictions (bytes): 0
ft: leaf node partial evictions: 0
ft: leaf node partial evictions (bytes): 0
ft: leaf node full evictions: 0
ft: leaf node full evictions (bytes): 0
ft: nonleaf node full evictions: 0
ft: nonleaf node full evictions (bytes): 0
ft: leaf nodes created: 1
ft: nonleaf nodes created: 0
ft: leaf nodes destroyed: 0
ft: nonleaf nodes destroyed: 0
ft: bytes of messages injected at root (all trees): 0
ft: bytes of messages flushed from h1 nodes to leaves: 4590182
ft: bytes of messages currently in trees (estimate): 18446744073704961434
ft: messages injected at root: 0
ft: broadcast messages injected at root: 0
ft: basements decompressed as a target of a query: 17
ft: basements decompressed for prelocked range: 107
ft: basements decompressed for prefetch: 0
ft: basements decompressed for write: 0
ft: buffers decompressed as a target of a query: 592
ft: buffers decompressed for prelocked range: 42
ft: buffers decompressed for prefetch: 0
ft: buffers decompressed for write: 1842
ft: pivots fetched for query: 1123
ft: pivots fetched for query (bytes): 33492480
ft: pivots fetched for query (seconds): 0.080313
ft: pivots fetched for prefetch: 182
ft: pivots fetched for prefetch (bytes): 5963776
ft: pivots fetched for prefetch (seconds): 0.006657
ft: pivots fetched for write: 1
ft: pivots fetched for write (bytes): 512
ft: pivots fetched for write (seconds): 0.000001
ft: basements fetched as a target of a query: 2956
ft: basements fetched as a target of a query (bytes): 36894208
ft: basements fetched as a target of a query (seconds): 0.022762
ft: basements fetched for prelocked range: 1087
ft: basements fetched for prelocked range (bytes): 8776192
ft: basements fetched for prelocked range (seconds): 0.003646
ft: basements fetched for prefetch: 7571
ft: basements fetched for prefetch (bytes): 63333888
ft: basements fetched for prefetch (seconds): 0.023587
ft: basements fetched for write: 1793
ft: basements fetched for write (bytes): 35568128
ft: basements fetched for write (seconds): 0.204071
ft: buffers fetched as a target of a query: 103
ft: buffers fetched as a target of a query (bytes): 79872
ft: buffers fetched as a target of a query (seconds): 0.000345
ft: buffers fetched for prelocked range: 64
ft: buffers fetched for prelocked range (bytes): 33280
ft: buffers fetched for prelocked range (seconds): 0.000066
ft: buffers fetched for prefetch: 0
ft: buffers fetched for prefetch (bytes): 0
ft: buffers fetched for prefetch (seconds): 0.000000
ft: buffers fetched for write: 501
ft: buffers fetched for write (bytes): 2763264
ft: buffers fetched for write (seconds): 0.007467
ft: leaf compression to memory (seconds): 1.362411
ft: leaf serialization to memory (seconds): 0.231286
ft: leaf decompression to memory (seconds): 3.132026
ft: leaf deserialization to memory (seconds): 0.957900
ft: nonleaf compression to memory (seconds): 0.303836
ft: nonleaf serialization to memory (seconds): 0.213000
ft: nonleaf decompression to memory (seconds): 0.109690
ft: nonleaf deserialization to memory (seconds): 0.367764
ft: promotion: roots split: 0
ft: promotion: leaf roots injected into: 3215
ft: promotion: h1 roots injected into: 0
ft: promotion: injections at depth 0: 0
ft: promotion: injections at depth 1: 0
ft: promotion: injections at depth 2: 0
ft: promotion: injections at depth 3: 0
ft: promotion: injections lower than depth 3: 0
ft: promotion: stopped because of a nonempty buffer: 0
ft: promotion: stopped at height 1: 0
ft: promotion: stopped because the child was locked or not at all in memory: 0
ft: promotion: stopped because the child was not fully in memory: 0
ft: promotion: stopped anyway, after locking the child: 0
ft: basement nodes deserialized with fixed-keysize: 8635
ft: basement nodes deserialized with variable-keysize: 7809
ft: promotion: succeeded in using the rightmost leaf shortcut: 0
ft: promotion: tried the rightmost leaf shorcut but failed (out-of-bounds): 0
ft: promotion: tried the rightmost leaf shorcut but failed (child reactive): 0
ft: cursor skipped deleted leaf entries: 0
ft flusher: total nodes potentially flushed by cleaner thread: 284
ft flusher: height-one nodes flushed by cleaner thread: 169
ft flusher: height-greater-than-one nodes flushed by cleaner thread: 115
ft flusher: nodes cleaned which had empty buffers: 179
ft flusher: nodes dirtied by cleaner thread: 199
ft flusher: max bytes in a buffer flushed by cleaner thread: 634343
ft flusher: min bytes in a buffer flushed by cleaner thread: 28068
ft flusher: total bytes in buffers flushed by cleaner thread: 14239007
ft flusher: max workdone in a buffer flushed by cleaner thread: 28681
ft flusher: min workdone in a buffer flushed by cleaner thread: 0
ft flusher: total workdone in buffers flushed by cleaner thread: 100880
ft flusher: times cleaner thread tries to merge a leaf: 0
ft flusher: cleaner thread leaf merges in progress: 0
ft flusher: cleaner thread leaf merges successful: 0
ft flusher: nodes dirtied by cleaner thread leaf merges: 0
ft flusher: total number of flushes done by flusher threads or cleaner threads: 105
ft flusher: number of in memory flushes: 105
ft flusher: number of flushes that read something off disk: 0
ft flusher: number of flushes that triggered another flush in child: 0
ft flusher: number of flushes that triggered 1 cascading flush: 0
ft flusher: number of flushes that triggered 2 cascading flushes: 0
ft flusher: number of flushes that triggered 3 cascading flushes: 0
ft flusher: number of flushes that triggered 4 cascading flushes: 0
ft flusher: number of flushes that triggered 5 cascading flushes: 0
ft flusher: number of flushes that triggered over 5 cascading flushes: 0
ft flusher: leaf node splits: 1
ft flusher: nonleaf node splits: 0
ft flusher: leaf node merges: 0
ft flusher: nonleaf node merges: 0
ft flusher: leaf node balances: 0
hot: operations ever started: 0
hot: operations successfully completed: 0
hot: operations aborted: 0
hot: max number of flushes from root ever required to optimize a tree: 0
txn: begin: 21209
txn: begin read only: 773
txn: successful commits: 21926
txn: aborts: 55
logger: next LSN: 28153398478
logger: writes: 1595
logger: writes (bytes): 2621362
logger: writes (uncompressed bytes): 2621362
logger: writes (seconds): 0.078234
logger: number of long logger write operations: 0
indexer: number of indexers successfully created: 0
indexer: number of calls to toku_indexer_create_indexer() that failed: 0
indexer: number of calls to indexer->build() succeeded: 0
indexer: number of calls to indexer->build() failed: 0
indexer: number of calls to indexer->close() that succeeded: 0
indexer: number of calls to indexer->close() that failed: 0
indexer: number of calls to indexer->abort(): 0
indexer: number of indexers currently in existence: 0
indexer: max number of indexers that ever existed simultaneously: 0
loader: number of loaders successfully created: 0
loader: number of calls to toku_loader_create_loader() that failed: 0
loader: number of calls to loader->put() succeeded: 0
loader: number of calls to loader->put() failed: 0
loader: number of calls to loader->close() that succeeded: 0
loader: number of calls to loader->close() that failed: 0
loader: number of calls to loader->abort(): 0
loader: number of loaders currently in existence: 0
loader: max number of loaders that ever existed simultaneously: 0
memory: number of malloc operations: 0
memory: number of free operations: 0
memory: number of realloc operations: 0
memory: number of malloc operations that failed: 0
memory: number of realloc operations that failed: 0
memory: number of bytes requested: 0
memory: number of bytes used (requested + overhead): 0
memory: number of bytes freed: 0
memory: largest attempted allocation size: 0
memory: size of the last failed allocation attempt: 0
memory: estimated maximum memory footprint: 0
memory: mallocator version: 3.6.0-0-g46c0af68bd248b04df75e4f92d5fb804c3d75340
memory: mmap threshold: 4194304
filesystem: ENOSPC redzone state: 0
filesystem: threads currently blocked by full disk: 0
filesystem: number of operations rejected by enospc prevention (red zone): 0
filesystem: most recent disk full: Thu Jan  1 00:00:00 1970
filesystem: number of write operations that returned ENOSPC: 0
filesystem: fsync time: 110384047
filesystem: fsync count: 2921
filesystem: long fsync time: 0
filesystem: long fsync count: 0
context: tree traversals blocked by a full fetch: 155
context: tree traversals blocked by a partial fetch: 144
context: tree traversals blocked by a full eviction: 0
context: tree traversals blocked by a partial eviction: 0
context: tree traversals blocked by a message injection: 0
context: tree traversals blocked by a message application: 3
context: tree traversals blocked by a flush: 0
context: tree traversals blocked by a the cleaner thread: 0
context: tree traversals blocked by something uninstrumented: 110
context: promotion blocked by a full fetch (should never happen): 0
context: promotion blocked by a partial fetch (should never happen): 0
context: promotion blocked by a full eviction (should never happen): 0
context: promotion blocked by a partial eviction (should never happen): 0
context: promotion blocked by a message injection: 0
context: promotion blocked by a message application: 0
context: promotion blocked by a flush: 0
context: promotion blocked by the cleaner thread: 0
context: promotion blocked by something uninstrumented: 0
context: something uninstrumented blocked by something uninstrumented: 53

Memory usage:
Arena 0:
system bytes     =          0
in use bytes     =          0
Total (incl. mmap):
system bytes     =          0
in use bytes     =          0
max mmap regions =          0
max mmap bytes   =          0
180720 11:54:51 [ERROR] mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed, 
something is definitely wrong and this may fail.

Server version: 10.1.32-MariaDB-1~xenial
key_buffer_size=1073741824
read_buffer_size=2097152
max_used_connections=77
max_threads=102
thread_count=63
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 27998262 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7501a10d6008
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0x75074c9bb0b8 thread_stack 0x48400
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0xbb03fe8b01e]
/usr/sbin/mysqld(handle_fatal_signal+0x2f5)[0xbb03f9d21d5]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7509937be390]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x750992d8d428]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x750992d8f02a]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x130508)[0x75099093f508]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x13067e)[0x75099093f67e]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x84bf8)[0x750990893bf8]
/usr/lib/mysql/plugin/ha_tokudb.so(_Z21toku_hton_assert_failPKcS0_S0_ii+0x88)[0x75099085ffc8]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb20open_main_dictionaryEPKcbP13__toku_db_txn+0x2d1)[0x750990879471]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb16initialize_shareEPKci+0x1c3)[0x750990885c23]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb4openEPKcij+0x4c4)[0x7509908866b4]
/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcij+0x33)[0xbb03f9d6633]
/usr/sbin/mysqld(+0xa2b855)[0xbb03fe5b855]
/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcij+0x33)[0xbb03f9d6633]
/usr/sbin/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPKcjjjP5TABLEb+0xb29)[0xbb03f8ed869]
/usr/sbin/mysqld(_Z10open_tableP3THDP10TABLE_LISTP18Open_table_context+0xade)[0xbb03f7f4dde]
/usr/sbin/mysqld(_Z11open_tablesP3THDRK14DDL_options_stPP10TABLE_LISTPjjP19Prelocking_strategy+0xab2)[0xbb03f7f9142]
/usr/sbin/mysqld(_Z30open_normal_and_derived_tablesP3THDP10TABLE_LISTjj+0x59)[0xbb03f7f9ca9]
/usr/sbin/mysqld(+0x470199)[0xbb03f8a0199]
/usr/sbin/mysqld(_Z14get_all_tablesP3THDP10TABLE_LISTP4Item+0x7e0)[0xbb03f8b3300]
/usr/sbin/mysqld(_Z24get_schema_tables_resultP4JOIN23enum_schema_table_state+0x296)[0xbb03f8b4df6]
/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0x71d)[0xbb03f89972d]
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x54)[0xbb03f89ba74]
/usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xe7)[0xbb03f898227]
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x139)[0xbb03f898bf9]
/usr/sbin/mysqld(+0x354a78)[0xbb03f784a78]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x71bb)[0xbb03f8422cb]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x311)[0xbb03f8444d1]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x25a0)[0xbb03f847b80]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x219)[0xbb03f848439]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x182)[0xbb03f916dd2]
/usr/sbin/mysqld(handle_one_connection+0x40)[0xbb03f916f70]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7509937b46ba]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x750992e5f41d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x75092284f020): SHOW TABLE STATUS
Connection ID (thread ID): 313
Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=off

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
Fri Jul 20 11:54:58 2018 PerconaFT recovery starting in env /var/lib/mysql/
Fri Jul 20 11:54:58 2018 PerconaFT recovery scanning backward from 28153398472
Fri Jul 20 11:54:58 2018 PerconaFT recovery bw_begin_checkpoint at 28153388869 timestamp 1532087648116967 (bw_newer)
Fri Jul 20 11:54:58 2018 PerconaFT recovery bw_end_checkpoint at 28153375388 timestamp 1532087589455194 xid 28153374688 (bw_newer)
Fri Jul 20 11:54:58 2018 PerconaFT recovery bw_begin_checkpoint at 28153374688 timestamp 1532087588115738 (bw_between)
Fri Jul 20 11:54:58 2018 PerconaFT recovery turning around at begin checkpoint 28153374688 time 1339456
Fri Jul 20 11:54:58 2018 PerconaFT recovery starts scanning forward to 28153398472 from 28153374688 left 23784 (fw_between)
Fri Jul 20 11:54:59 2018 PerconaFT recovery closing 9602 dictionaries
Fri Jul 20 11:56:23 2018 PerconaFT recovery making a checkpoint
Fri Jul 20 11:56:24 2018 PerconaFT recovery done
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: The InnoDB memory heap is disabled
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Compressed tables use zlib 1.2.8
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Using Linux native AIO
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Using SSE crc32 instructions
2018-07-20 11:56:24 110652200757504 [Note] InnoDB: Initializing buffer pool, size = 28.0G
2018-07-20 11:56:25 110652200757504 [Note] InnoDB: Completed initialization of buffer pool
2018-07-20 11:56:25 110652200757504 [Note] InnoDB: Highest supported file format is Barracuda.
2018-07-20 11:56:25 110652200757504 [Note] InnoDB: The log sequence number 1208943385836 in ibdata file do not match the log sequence number 1208943825678 in the ib_logfiles!
2018-07-20 11:56:26 110652200757504 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...
InnoDB: Last MySQL binlog file position 0 10826, file name /var/log/mysql/mariadb-bin.049021
2018-07-20 11:56:28 110652200757504 [Note] InnoDB: 128 rollback segment(s) are active.
2018-07-20 11:56:28 110652200757504 [Note] InnoDB: Waiting for purge to start
2018-07-20 11:56:28 110652200757504 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.38-83.0 started; log sequence number 1208943825678
2018-07-20 11:56:28 110617173968640 [Note] InnoDB: Dumping buffer pool(s) not yet started
2018-07-20 11:56:28 110652200757504 [Note] Plugin 'FEEDBACK' is disabled.
2018-07-20 11:56:28 110652200757504 [Note] Recovering after a crash using /var/log/mysql/mariadb-bin
2018-07-20 11:56:28 110652200757504 [Note] Starting crash recovery...
2018-07-20 11:56:28 110652200757504 [Note] Crash recovery finished.
2018-07-20 11:56:29 110652200757504 [Note] Server socket created on IP: '10.1.34.209'.
2018-07-20 11:56:29 110652199594752 [Note] /usr/sbin/mysqld: Normal shutdown
2018-07-20 11:56:29 110652200757504 [Note] Reading of all Master_info entries succeded
2018-07-20 11:56:29 110652200757504 [Note] Added new Master_info '' to hash table
2018-07-20 11:56:29 110652200757504 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--log-basename=#' or '--relay-log=mysqld-relay-bin' to avoid this problem.
2018-07-20 11:56:29 110652148878080 [Note] Slave I/O thread killed while connecting to master
2018-07-20 11:56:29 110652148878080 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000610', position 3794787
2018-07-20 11:56:29 110652200757504 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.32-MariaDB-1~xenial'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution
2018-07-20 11:56:29 110652059814656 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000610' at position 3794787, relay log './mysqld-relay-bin.001348' position: 537
2018-07-20 11:56:29 110652059814656 [Note] Slave SQL thread exiting, replication stopped in log 'mysql-bin.000610' at position 3794787
2018-07-20 11:56:29 110652199594752 [Note] Event Scheduler: Purging the queue. 0 events
2018-07-20 11:56:29 110617208469248 [Note] InnoDB: FTS optimize thread exiting.
2018-07-20 11:56:29 110652199594752 [Note] InnoDB: Starting shutdown...
2018-07-20 11:56:30 110652199594752 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2018-07-20 11:56:32 110652199594752 [Note] InnoDB: Shutdown completed; log sequence number 1208943825688
2018-07-20 11:56:33 110652199594752 [Note] /usr/sbin/mysqld: Shutdown complete

2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: The InnoDB memory heap is disabled
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Compressed tables use zlib 1.2.8
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Using Linux native AIO
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Using SSE crc32 instructions
2018-07-20 11:56:40 112313184844032 [Note] InnoDB: Initializing buffer pool, size = 28.0G
2018-07-20 11:56:41 112313184844032 [Note] InnoDB: Completed initialization of buffer pool
2018-07-20 11:56:41 112313184844032 [Note] InnoDB: Highest supported file format is Barracuda.
2018-07-20 11:56:42 112313184844032 [Note] InnoDB: 128 rollback segment(s) are active.
2018-07-20 11:56:42 112313184844032 [Note] InnoDB: Waiting for purge to start
2018-07-20 11:56:42 112313184844032 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.38-83.0 started; log sequence number 1208943825688
2018-07-20 11:56:42 112278339090176 [Note] InnoDB: Dumping buffer pool(s) not yet started
2018-07-20 11:56:42 112313184844032 [Note] Plugin 'FEEDBACK' is disabled.
2018-07-20 11:56:42 112313184844032 [Note] Server socket created on IP: '10.1.34.209'.
2018-07-20 11:56:42 112313184844032 [Note] Reading of all Master_info entries succeded
2018-07-20 11:56:42 112313184844032 [Note] Added new Master_info '' to hash table
2018-07-20 11:56:42 112313184844032 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--log-basename=#' or '--relay-log=mysqld-relay-bin' to avoid this problem.
2018-07-20 11:56:43 112313184844032 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.32-MariaDB-1~xenial'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution
2018-07-20 11:56:43 112313035815680 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000610' at position 3794787, relay log './mysqld-relay-bin.001348' position: 537
2018-07-20 11:56:43 112311935490816 [Warning] IP address '10.1.34.65' could not be resolved: Name or service not known
2018-07-20 11:56:43 112313036823296 [Note] Slave I/O thread: connected to master 'repl@10.1.143.209:3306',replication started in log 'mysql-bin.000610' at position 3794787
2018-07-20 11:56:43 112311935490816 [Warning] IP address '10.1.34.52' could not be resolved: Name or service not known
2018-07-20 11:56:43 112299437738752 [Warning] IP address '10.1.34.52' could not be resolved: Name or service not known
2018-07-20 11:56:43 112313037511424 [Warning] IP address '10.1.34.61' could not be resolved: Name or service not known
2018-07-20 11:56:43 112295490644736 [Warning] IP address '10.1.34.61' could not be resolved: Name or service not known
2018-07-20 11:56:43 112299436624640 [Warning] IP address '10.1.201.50' could not be resolved: Name or service not known
2018-07-20 11:56:43 112313036348160 [Warning] IP address '10.1.201.50' could not be resolved: Name or service not known
2018-07-20 11:56:43 112313035066112 [Warning] IP address '10.1.143.209' could not be resolved: Name or service not known
2018-07-20 11:56:43 112291544021760 [Warning] IP address '10.1.34.218' could not be resolved: Name or service not known
2018-07-20 11:56:43 112287596022528 [Warning] IP address '10.1.31.61' could not be resolved: Name or service not known
2018-07-20 11:56:44 112313035434752 [Warning] IP address '10.1.44.50' could not be resolved: Name or service not known
2018-07-20 11:56:44 112287596022528 [Warning] IP address '10.1.44.50' could not be resolved: Name or service not known
2018-07-20 11:56:44 112313035066112 [Note] Start binlog_dump to slave_server(2), pos(mariadb-bin.049023, 4088)