couchbase nodes RAM is getting full frequently -


we have 4 node cluster, 24 gb ram, out of 18gb has been given couchbase 0 replicaion. have approx 10m of records in cluster ~2.5m/hour , expire old items. ram usage ~72gb getting full every ~12 days, , need restart cluster fix this. after restart again ram usage ~20gb.

can please understand reason it.

fyi : auto compaction set 40% fragment level , meta data purge interval set 1 day, -- reduced 2 hours. didn't help.

under scenarios high memory allocation churn couchbase can experience memory fragmentation, cause effects describing. addressed in 4.x release switching jemalloc on non-windows oses , using tcmalloc agressive decommit on windows. suggest download rc version of couchbase 4 (http://www.couchbase.com/nosql-databases/downloads#couchbase_server) , give try see if fixes issue.


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