Thread 4 (Thread 0x7f14869dc700 (LWP 13351)):

#0  0x00007f1487769f97 in sched_yield () from /lib64/libc.so.6

#1  0x00000000004448a3 in __wt_yield () at ../src/os_posix/os_yield.c:18

#2  0x000000000046d57f in __wt_session_lock_dhandle (session=0xad98e0, flags=24, is_deadp=0x7f14869dba3f) at ../src/session/session_dhandle.c:218

#3  0x000000000046de9f in __wt_session_get_btree (session=0xad98e0, uri=0x7f13f0017620 "file:wt-000110.lsm", checkpoint=0x7f141827cd50 "WiredTigerCheckpoint.2", cfg=0x0,

    flags=24) at ../src/session/session_dhandle.c:465

#4  0x000000000046e450 in __wt_session_lock_checkpoint (session=0xad98e0, checkpoint=0x7f141827cd50 "WiredTigerCheckpoint.2") at ../src/session/session_dhandle.c:547

#5  0x000000000047de26 in __checkpoint_worker (session=0xad98e0, cfg=0x0, is_checkpoint=false, need_tracking=false) at ../src/txn/txn_ckpt.c:988

#6  0x000000000047e6b2 in __wt_checkpoint_close (session=0xad98e0, final=false) at ../src/txn/txn_ckpt.c:1271

#7  0x00000000004c418b in __wt_conn_btree_sync_and_close (session=0xad98e0, final=false, force=false) at ../src/conn/conn_dhandle.c:199

#8  0x00000000004c4fc8 in __wt_conn_dhandle_close_all (session=0xad98e0, uri=0x7f13f00082d0 "file:wt-000110.lsm", force=false) at ../src/conn/conn_dhandle.c:570

#9  0x000000000045dd5e in __drop_file (session=0xad98e0, uri=0x7f13f00082d0 "file:wt-000110.lsm", force=false, cfg=0x7f14869dbdd0) at ../src/schema/schema_drop.c:32

#10 0x000000000045e3c1 in __wt_schema_drop (session=0xad98e0, uri=0x7f13f00082d0 "file:wt-000110.lsm", cfg=0x7f14869dbdd0) at ../src/schema/schema_drop.c:180

#11 0x00000000004ee3c1 in __lsm_drop_file (session=0xad98e0, uri=0x7f13f00082d0 "file:wt-000110.lsm") at ../src/lsm/lsm_work_unit.c:517

#12 0x00000000004ee644 in __wt_lsm_free_chunks (session=0xad98e0, lsm_tree=0xb58e10) at ../src/lsm/lsm_work_unit.c:608

#13 0x000000000043c168 in __lsm_worker_general_op (session=0xad98e0, cookie=0xad3ba0, completed=0x7f14869dbee6) at ../src/lsm/lsm_worker.c:72

---Type <return> to continue, or q <return> to quit---

#14 0x000000000043c285 in __lsm_worker (arg=0xad3ba0) at ../src/lsm/lsm_worker.c:122

#15 0x00007f1488077555 in start_thread () from /lib64/libpthread.so.0

#16 0x00007f1487785f3d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f14851d9700 (LWP 13357)):

#0  0x00007f148807f29d in __lll_lock_wait () from /lib64/libpthread.so.0

#1  0x00007f148807988d in pthread_mutex_lock () from /lib64/libpthread.so.0

#2  0x000000000046ce16 in __wt_spin_lock (session=0xad8fe0, t=0xac6600) at ../src/include/mutex.i:159

#3  0x000000000046dd44 in __session_get_dhandle (session=0xad8fe0, uri=0x51e9c8 "file:WiredTiger.wt", checkpoint=0x0) at ../src/session/session_dhandle.c:431

#4  0x000000000046de49 in __wt_session_get_btree (session=0xad8fe0, uri=0x51e9c8 "file:WiredTiger.wt", checkpoint=0x0, cfg=0x0, flags=0)

    at ../src/session/session_dhandle.c:454

#5  0x000000000043c858 in __wt_metadata_open (session=0xad8fe0) at ../src/meta/meta_table.c:45

#6  0x000000000046c016 in __wt_open_session (conn=0xac61c0, event_handler=0x0, config=0x518c42 "isolation=snapshot", open_metadata=true, sessionp=0x7f14851d8d80)

    at ../src/session/session_api.c:1305

#7  0x00000000004107e2 in __conn_open_session (wt_conn=0xac61c0, event_handler=0x0, config=0x518c42 "isolation=snapshot", wt_sessionp=0x7f14851d8e90)

    at ../src/conn/conn_api.c:1091

#8  0x0000000000406517 in ops (arg=0xad4a00) at ../../../test/format/ops.c:286

#9  0x00007f1488077555 in start_thread () from /lib64/libpthread.so.0

#10 0x00007f1487785f3d in clone () from /lib64/libc.so.6

############################################

#  RUN PARAMETERS

############################################

abort=0

auto_throttle=1

firstfit=0

bitcnt=2

bloom=1

bloom_bit_count=60

bloom_hash_count=7

bloom_oldest=0

cache=180

checkpoints=1

checksum=uncompressed

chunk_size=6

compaction=0

compression=none

data_extend=0

data_source=lsm

delete_pct=29

dictionary=0

encryption=rotn-7

evict_max=0

file_type=row-store

backups=0

huffman_key=0

huffman_value=0

insert_pct=54

internal_key_truncation=1

internal_page_max=9

isolation=snapshot

key_gap=6

key_max=50

key_min=30

leak_memory=0

leaf_page_max=15

logging=0

logging_compression=none

logging_archive=0

logging_prealloc=0

long_running_txn=0

lsm_worker_threads=4

merge_max=7

mmap=1

ops=716676

prefix_compression=0

prefix_compression_min=1

repeat_data_pct=35

reverse=0

rows=771677

runs=0

salvage=1

split_pct=62

statistics=1

statistics_server=0

threads=1

timer=20

value_max=2592

value_min=17

verify=1

wiredtiger_config=

write_pct=39

############################################