rystsov questions

rystsov answers

• How can i debug Hadoop map reduce [duplicate]
• MongoDB transactions?
• What is the difference between Sequential Consistency and Eventual Consistency?
• Is it possible to send parts of the mapper out put to reducer, while just writing the other part to HDFS, in hadoop?
• Sharding and Transactions with MySQL
• Zookeeper multiple leader election issue
• Paxos algorithm in the context of distributed database transaction
• How to achieve immediate consistency in microservice architecture?