(node crashes under set/get load while running large scale testing ( SQL logic error or missing database)

diags attached.

according to diags node was running fine but after 00:02 we had issues writing to disk

memcached<0.10886.0>: sqlite error: disk I/O error


ns_log: logging ns_port_server:0:Port server memcached on node 'ns_1@10.82.238.5' exited with status 1. Restarting. Messages: sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database
sqlite error: SQL logic error or missing database