couch_view_index_updater terminating with core dumps

We have observed that couch_view_index_updater is crashing at regular intervals.
4 node cluster: 2 cores, 8 GB each
bucket is allocated 2 GB * 4 = 8 GB.
We are pushing 8 per second items to couchbase continiuosly 24/7 (each item is of ~1 MB size).
we have 1 bucket. Bucket has 6 design docs and 24 views. 4 buckets has 1 view each and other 2 design
docs have 10 views each.
We emit very very huge data per item from map/reduce.
21 views emit around 10000 KV pairs for each input document.

Any particular reason indexer is crashing ? it restarts automatically though.

couchbase]# gdb -c core.6731
GNU gdb (GDB) Amazon Linux (7.6.1-51.24.amzn1)
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[New LWP 6741]
[New LWP 6736]
[New LWP 6733]
[New LWP 6737]
[New LWP 6731]
Missing separate debuginfo for the main executable file
Try: yum --enablerepo=‘debug’ install /usr/lib/debug/.build-id/00/2d878a64b2e42cdba05b4dde0654f4f7664e6d
Core was generated by `/opt/couchbase/bin/couch_view_index_updater’.
Program terminated with signal 6, Aborted.
#0 0x00007f816d1ebbe9 in ?? ()
(gdb)