Details
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Improvement
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Status: Backlog
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Minor - P4
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Resolution: Unresolved
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4.4.2, 4.9.0-alpha4
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None
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None
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Service Arch
Description
When I perform an insert that fails due to unique index violation, mongod does not return error code name but mongos does.
Test program:
require 'mongo'
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require 'byebug'
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def test(port)
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client = Mongo::Client.new(["localhost:#{port}"], database: 'test')
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coll = client['foo']
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coll.delete_many
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coll.insert_one(_id: 1)
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begin
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coll.insert_one(_id: 1)
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rescue Mongo::Error::OperationFailure => e
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pp e.document
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end
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end
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[14400, 14420, 14440, 14900, 14920, 14940].each do |port|
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puts
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puts "Testing #{port}"
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test(port)
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end
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Legend:
14400 4.4 standalone
14420 4.4 replica set
14440 4.4 sharded cluster
14900 4.9 standalone
14920 4.9 replica set
14940 4.9 sharded cluster
Results:
Testing 14400
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{"n"=>0,
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"keyPattern"=>{"_id"=>1},
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"keyValue"=>{"_id"=>1},
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"ok"=>1.0}
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Testing 14420
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{"n"=>0,
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"keyPattern"=>{"_id"=>1},
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"keyValue"=>{"_id"=>1},
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"opTime"=>
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{"ts"=>
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#<BSON::Timestamp:0x00005567763138b8 @increment=2, @seconds=1616946710>,
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"t"=>1},
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"electionId"=>BSON::ObjectId('7fffffff0000000000000001'),
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"ok"=>1.0,
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"$clusterTime"=>
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{"clusterTime"=>
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#<BSON::Timestamp:0x0000556776313688 @increment=3, @seconds=1616946710>,
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"signature"=>
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{"hash"=><BSON::Binary:0x1660 type=generic data=0x0000000000000000...>,
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"keyId"=>0}},
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"operationTime"=>
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#<BSON::Timestamp:0x0000556776313430 @increment=2, @seconds=1616946710>}
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Testing 14440
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{"n"=>0,
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"codeName"=>"DuplicateKey",
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"ok"=>1.0,
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"operationTime"=>
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#<BSON::Timestamp:0x00005567761da370 @increment=3, @seconds=1616946710>,
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"$clusterTime"=>
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{"clusterTime"=>
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#<BSON::Timestamp:0x00005567761da000 @increment=4, @seconds=1616946710>,
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"signature"=>
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{"hash"=><BSON::Binary:0x1780 type=generic data=0x0000000000000000...>,
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"keyId"=>0}}}
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Testing 14900
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{"n"=>0,
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"keyPattern"=>{"_id"=>1},
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"keyValue"=>{"_id"=>1},
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"ok"=>1.0}
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Testing 14920
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{"n"=>0,
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"electionId"=>BSON::ObjectId('7fffffff0000000000000001'),
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"opTime"=>
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{"ts"=>
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#<BSON::Timestamp:0x0000556775c21820 @increment=2, @seconds=1616946710>,
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"t"=>1},
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"keyPattern"=>{"_id"=>1},
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"keyValue"=>{"_id"=>1},
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"ok"=>1.0,
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"$clusterTime"=>
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{"clusterTime"=>
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#<BSON::Timestamp:0x0000556775c37468 @increment=3, @seconds=1616946710>,
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"signature"=>
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{"hash"=><BSON::Binary:0x2120 type=generic data=0x0000000000000000...>,
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"keyId"=>0}},
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"operationTime"=>
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#<BSON::Timestamp:0x0000556775c37080 @increment=2, @seconds=1616946710>}
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Testing 14940
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{"n"=>0,
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"writeErrors"=>
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[{"index"=>0,
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"code"=>11000,
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"codeName"=>"DuplicateKey",
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"errmsg"=>
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"E11000 duplicate key error collection: test.foo index: _id_ dup key: { _id: 1 }"}],
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"ok"=>1.0,
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"$clusterTime"=>
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{"clusterTime"=>
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#<BSON::Timestamp:0x000055677654c080 @increment=10, @seconds=1616946710>,
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"signature"=>
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{"hash"=><BSON::Binary:0x2240 type=generic data=0x0000000000000000...>,
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"keyId"=>0}},
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"operationTime"=>
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#<BSON::Timestamp:0x0000556776533e40 @increment=9, @seconds=1616946710>}
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On both 4.4 and 4.9, sharded cluster responses include codeName and neither standalone nor mongos responses do.
Since the error originates in a mongod, mongod should be able to fill in the code name also?
Tested on 4.9.0-alpha7.
