Log:

018-11-08T22:22:49.397+0000 E STORAGE [thread2] WiredTiger error (22) [1541715769:397467][110545:0x7f3a43f80700], file:impl_condeco_group_l_30329/collection-8059533--382801488
1901953997.wt, WT_SESSION.checkpoint: (null): merge range 18665472-18694144 overlaps with existing range 18673664-18677760: Invalid argument
2018-11-08T22:22:49.397+0000 E STORAGE [thread2] WiredTiger error (-31804) [1541715769:397565][110545:0x7f3a43f80700], file:impl_condeco_group_l_30329/collection-8059533--38280
14881901953997.wt, WT_SESSION.checkpoint: the process must exit and restart: WT_PANIC: WiredTiger library panic
2018-11-08T22:22:49.398+0000 I - [thread2] Fatal Assertion 28558 at src/mongo/db/storage/wiredtiger/wiredtiger_util.cpp 365
2018-11-08T22:22:49.398+0000 I - [thread2]
***aborting after fassert() failure
2018-11-08T22:22:49.422+0000 I - [WTJournalFlusher] Fatal Assertion 28559 at src/mongo/db/storage/wiredtiger/wiredtiger_util.cpp 64
2018-11-08T22:22:49.422+0000 I - [WTJournalFlusher]
***aborting after fassert() failure
2018-11-08T22:22:49.485+0000 F - [thread2] Got signal: 6 (Aborted).
{{ 0x55b6fb8c02e1 0x55b6fb8bf4f9 0x55b6fb8bf9dd 0x7f3a49366390 0x7f3a48fc0428 0x7f3a48fc202a 0x55b6fab52d9b 0x55b6fb5c41b6 0x55b6fab5d4f0 0x55b6fab5d70c 0x55b6fab5d96e 0x55b6fc1cd}}
29f 0x55b6fc1ce35e 0x55b6fc1cbd57 0x55b6fc26e679 0x55b6fc26e984 0x55b6fc2bcf0d 0x55b6fc2bd319 0x55b6fc2aa051 0x55b6fc221c9d 0x7f3a4935c6ba 0x7f3a4909241d
----- BEGIN BACKTRACE -----
{{

{"backtrace":[\{"b":"55B6FA334000","o":"158C2E1","s":"_ZN5mongo15printStackTraceERSo"}

,{"b":"55B6FA334000","o":"158B4F9"},{"b":"55B6FA334000","o":"158B9DD"},{"b":"7F3A49355000","}}
o":"11390"},{"b":"7F3A48F8B000","o":"35428","s":"gsignal"},{"b":"7F3A48F8B000","o":"3702A","s":"abort"},{"b":"55B6FA334000","o":"81ED9B","s":"_ZN5mongo32fassertFailedNoTraceWith
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"1F89319","s":"__wt_txn_checkpoint"},{"b":"55B6FA334000","o":"1F76051"},{"b":"55B6FA334000","o":"1EEDC9D"},{"b":"7F3A49355000","o":"76BA"},{"b":"7F3A48F8B000","o":"10741D","s":"
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e" : "4.4.0-1065-aws", "version" : "#75-Ubuntu SMP Fri Aug 10 11:14:32 UTC 2018", "machine" : "x86_64" }, "somap" : [ { "b" : "55B6FA334000", "elfType" : 3, "buildId" : "4666D43
DAC0EEFE6CF01C4D660FEEDECE3E6E375" }, { "b" : "7FFE2557B000", "elfType" : 3, "buildId" : "98B173804DDFA7204D8EC8829DB1D865B54DCD24" }, { "b" : "7F3A4A2E1000", "path" : "/lib/x86
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{{ mongod(_ZN5mongo15printStackTraceERSo+0x41) [0x55b6fb8c02e1]}}
{{ mongod(+0x158B4F9) [0x55b6fb8bf4f9]}}
{{ mongod(+0x158B9DD) [0x55b6fb8bf9dd]}}
{{ libpthread.so.0(+0x11390) [0x7f3a49366390]}}
{{ libc.so.6(gsignal+0x38) [0x7f3a48fc0428]}}
{{ libc.so.6(abort+0x16A) [0x7f3a48fc202a]}}
{{ mongod(_ZN5mongo32fassertFailedNoTraceWithLocationEiPKcj+0x0) [0x55b6fab52d9b]}}
{{ mongod(+0x12901B6) [0x55b6fb5c41b6]}}
{{ mongod(__wt_eventv+0x3D7) [0x55b6fab5d4f0]}}
{{ mongod(__wt_err+0x9D) [0x55b6fab5d70c]}}
{{ mongod(__wt_panic+0x2E) [0x55b6fab5d96e]}}
{{ mongod(+0x1E9929F) [0x55b6fc1cd29f]}}
{{ mongod(__wt_block_extlist_merge+0x7E) [0x55b6fc1ce35e]}}
{{ mongod(__wt_block_checkpoint_resolve+0x57) [0x55b6fc1cbd57]}}
{{ mongod(+0x1F3A679) [0x55b6fc26e679]}}
{{ mongod(__wt_meta_track_off+0x154) [0x55b6fc26e984]}}
{{ mongod(+0x1F88F0D) [0x55b6fc2bcf0d]}}
{{ mongod(__wt_txn_checkpoint+0xD9) [0x55b6fc2bd319]}}
{{ mongod(+0x1F76051) [0x55b6fc2aa051]}}
{{ mongod(+0x1EEDC9D) [0x55b6fc221c9d]}}
{{ libpthread.so.0(+0x76BA) [0x7f3a4935c6ba]}}
{{ libc.so.6(clone+0x6D) [0x7f3a4909241d]}}
----- END BACKTRACE -----