Analytics service crashes when ingesting maximum size docs (20MB) with minimally sized Analytics memory quota

Node 1 - KV,N1QL and index
Node 2 - cbas
1) allocate 1200MB to CBAS node.
2) upload multiple docs into a KV bucket. Total size of all the docs is 1200MB.
3) create a dataset on the bucket in which data was loaded.
4) Check doc count in the dataset using "select count(*) from ds". This query is run in a loop until all the docs are ingested into dataset.
CBAS service crash is observed.