DBCollection contextCollection = this.mongoTemplate.getCollection("productStock");
BulkWriteOperation builder = contextCollection.initializeUnorderedBulkOperation();
StockType stockItem = stockMessage.getStockItem();

final BasicDBObject id = new BasicDBObject("storeID", stockItem.getStoreID()).append("productID", stockItem.getProductID());
BulkWriteRequestBuilder bulkWriteRequestBuilder = builder.find(new BasicDBObject("_id", id));
HashMap<String, Object> stock = new HashMap<>();
Date currentDate = Calendar.getInstance().getTime();

stock.put("value", stockItem.getValue());
if (stockItem.getAssociateDate() != null) {
    stock.put("associateDate", stockItem.getAssociateDate());
}

if (stockItem.getLastAccessDateSource() != null) {
    stock.put("lastAccessDateSource", stockItem.getLastAccessDateSource());

    // check
    BasicDBObject ltLast = new BasicDBObject("$lt", stockItem.getLastAccessDateSource());
    BasicDBList dbList = new BasicDBList();
    dbList.add(new BasicDBObject(stockItem.getStockCategory() + ".lastAccessDateSource", ltLast));
    dbList.add(new BasicDBObject(stockItem.getStockCategory() + ".lastAccessDateSource", null));
    bulkWriteRequestBuilder = builder.find(new BasicDBObject("_id", id).append("$or", dbList));
} else {
    stock.put("lastAccessDateSource", currentDate);
}

stock.put("lastUpdateDate", currentDate);
BasicDBObject set = new BasicDBObject(stockItem.getStockCategory(), new Document(stock));
bulkWriteRequestBuilder.upsert().updateOne(new BasicDBObject("$set", set));
builder.execute();

Map<String, List<StockType>> mapMultiUpdate = new HashMap<>();
StockType stockItem = stockMessage.getStockItem();

final Document id = new Document("storeID", stockItem.getStoreID()).append("productID", stockItem.getProductID());
HashMap<String, Object> stock = new HashMap<>();
Date currentDate = Calendar.getInstance().getTime();
Document searchQuery = new Document("_id", id).append("$or", dbList);
stock.put("value", stockItem.getValue());
if (stockItem.getAssociateDate() != null) {
    stock.put("associateDate", stockItem.getAssociateDate());
}

if (stockItem.getLastAccessDateSource() != null) {
    stock.put("lastAccessDateSource", stockItem.getLastAccessDateSource());

    // check
    Document ltLast = new Document("$lt", stockItem.getLastAccessDateSource());
    List<Document> dbList = Lists.newArrayList();
    dbList.add(new Document(stockItem.getStockCategory() + ".lastAccessDateSource", ltLast));
    dbList.add(new Document(stockItem.getStockCategory() + ".lastAccessDateSource", null));
} else {
    stock.put("lastAccessDateSource", currentDate);
}


//Bulk write options
BulkWriteOptions bulkWriteOptions = new BulkWriteOptions();
bulkWriteOptions.ordered(false);
bulkWriteOptions.bypassDocumentValidation(true);

MongoCollection<Document> mongoCollection = this.mongoTemplate.getCollection("productStoreStock");
mongoCollection.bulkWrite(updateDocuments, bulkWriteOptions);

om.mongodb.MongoBulkWriteException: Bulk write operation error on server localhost:27017. Write errors: [BulkWriteError{index=0, code=11000, message='E11000 duplicate key error collection: test.productStoreStock index: _id_ dup key: { : { storeID: 400, productID: 100000 } }', details={}}]*