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Type:
Bug
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Resolution: Duplicate
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Priority:
Major - P3
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None
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Affects Version/s: 3.6.0
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Component/s: None
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None
mongo-java-driver version 3.6.0-beta2
Following the draft tutorial from
http://mongodb.github.io/mongo-java-driver/3.6/driver/tutorials/change-streams/
It can be observed that ChangeStreamDocument is missing the value of _id information for delete operation.
An example output using MongoDB Java driver when watching for a delete action:
ChangeStreamOutput{resumeToken={ "_data" : { "$binary" : "glnyzgsAAAABRmRfaWQAZFnyx9Kt2EoTEfEpngBaEATdDjimqgNN+5iz/fXo8WsLBA==", "$type" : "00" } }, namespace=test.restaurants, fullDocument=null, operationType=OperationType{value='delete'}, updateDescription=null}
The same output in mongo shell:
{
"_id" : {
"_data" : BinData(0,"glnyzgsAAAABRmRfaWQAZFnyx9Kt2EoTEfEpngBaEATdDjimqgNN+5iz/fXo8WsLBA==")
},
"operationType" : "delete",
"ns" : {
"db" : "test",
"coll" : "restaurants"
},
"documentKey" : {
"_id" : ObjectId("59f2c7d2add84a1311f1299e")
}
}
Using MongoDB Python driver (master/unreleased)
{u'documentKey': {u'_id': ObjectId('59f2c7d2add84a1311f1299e')}, u'_id': RawBSONDocument('B\x00\x00\x00\x05_data\x001\x00\x00\x00\x00\x82Y\xf2\xce\x0b\x00\x00\x00\x01Fd_id\x00dY\xf2\xc7\xd2\xad\xd8J\x13\x11\xf1)\x9e\x00Z\x10\x04\xdd\x0e8\xa6\xaa\x03M\xfb\x98\xb3\xfd\xf5\xe8\xf1k\x0b\x04\x00', codec_options=CodecOptions(document_class=<class 'bson.raw_bson.RawBSONDocument'>, tz_aware=False, uuid_representation=PYTHON_LEGACY, unicode_decode_error_handler='strict', tzinfo=None)), u'ns': {u'coll': u'restaurants', u'db': u'test'}, u'operationType': u'delete'}
Perhaps this is because _id information is included in fullDocument section for insert, update, replace but for delete fullDocument is null. Adding documentKey as a property of ChangeStreamDocument may solve this issue.
- duplicates
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JAVA-2632 Add documentKey property to ChangeStreamDocument
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- Closed
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