I want to update thousands of documents in mongo collection. I want to find them using ObjectId and then whichever document matches , should be updated. My update is same for all documents. I have list of ObjectId. For every ObjectId in list, mongo should find matching document and update "isBad" key of that document to "N"
ids = [ObjectId('56ac9d3fa722f1029b75b128'), ObjectId('56ac8961a722f10249ad0ad1')]
bulk = db.testdata.initialize_unordered_bulk_op()
bulk.find( { '_id': ids} ).update( { '$set': { "isBad" : "N" } } )
print bulk.execute()
This gives me result :
{'nModified': 0, 'nUpserted': 0, 'nMatched': 0, 'writeErrors': [], 'upserted': [], 'writeConcernErrors': [], 'nRemoved': 0, 'nInserted': 0}
This is expected because it is trying to match "_id" with list. But I don't know how to proceed.
I know how to update every document individually. My list size is of the order of 25000. I do not want to make 25000 calls individually. Number of documents in my collection are much more. I am using python2, pymongo = 3.2.1.
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