> db.runCommand({ "create" : "collectionName" , "validator" : { "fieldName" : { "$gte" : 1024 }}}) { "ok" : 1 } > db.runCommand({ "create" : "outCollectionName" , "validator" : { "fieldName" : { "$gte" : 8192 }}}) { "ok" : 1 } > db.runCommand({insert: "collectionName" , "documents" : [{ "fieldName" : 128}]}) { "ok" : 1, "n" : 0, "writeErrors" : [ { "index" : 0, "code" : 121, "errmsg" : "Document failed validation" } ] } > db.runCommand({insert: "collectionName" , "documents" : [{ "fieldName" : 2048}]}) { "ok" : 1, "n" : 1 } > db.runCommand({ "aggregate" : "collectionName" , pipeline: [ { "$out" : "outCollectionName" } ]}) { "ok" : 0, "errmsg" : "insert for $out failed: { connectionId: 1, err: \" Document failed validation\ ", code: 121, n: 0, ok: 1.0 }" , "code" : 16996 } > db.version() 3.1.9-pre- > db.runCommand({buildinfo: 1}) { "version" : "3.1.9-pre-" , "gitVersion" : "849505ebc395d15c6f777d96436447f1f98f7285" , "modules" : [ "enterprise" ], "allocator" : "tcmalloc" , "javascriptEngine" : "mozjs" , "sysInfo" : "deprecated" , "versionArray" : [ 3, 1, 9, -100 ], "openssl" : { "running" : "OpenSSL 1.0.1f 6 Jan 2014" , "compiled" : "OpenSSL 1.0.1f 6 Jan 2014" }, "buildEnvironment" : { "distmod" : "ubuntu1404" , "distarch" : "x86_64" , "cc" : "/opt/mongodbtoolchain/bin/gcc: gcc (GCC) 4.8.2" , "ccflags" : "-fno-omit-frame-pointer -fPIC -fno-strict-aliasing -ggdb -pthread -Wall -Wsign-compare -Wno-unknown-pragmas -Winvalid-pch -Werror -O2 -Wno-unused-local-typedefs -Wno-unused- function -Wno-deprecated-declarations -Wno-unused-but-set-variable -Wno-missing-braces -fno-builtin-memcmp" , "cxx" : "/opt/mongodbtoolchain/bin/g++: g++ (GCC) 4.8.2" , "cxxflags" : "-Wnon-virtual-dtor -Woverloaded-virtual -std=c++11" , "linkflags" : "-fPIC -pthread -Wl,-z,now -rdynamic -fuse-ld=gold -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,-E" , "target_arch" : "x86_64" , "target_os" : "linux" }, "bits" : 64, "debug" : false , "maxBsonObjectSize" : 16777216, "storageEngines" : [ "devnull" , "inMemoryExperiment" , "mmapv1" , "wiredTiger" ], "ok" : 1 }