Re: What happens if Primary Node fails during the Commit Phase

2018-02-12 Thread John Wilson
I got the answer for #3 here https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Durable+Memory+-+under+the+hood#IgniteDurableMemory-underthehood-Pages&links. I will post the remaining questions in a separate thread. On Mon, Feb 12, 2018 at 8:03 PM, John Wilson wrote: > You're always helpf

Re: What happens if Primary Node fails during the Commit Phase

2018-02-12 Thread John Wilson
You're always helpful Val. Thanks! I have a question regarding Optimistic Locking 1. The documentation here, https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Key-Value+Transactions+Architecture, states that locks, for optimistic locking, are acquired during the "prepare" p

Re: What happens if Primary Node fails during the Commit Phase

2018-02-12 Thread vkulichenko
Hi John, 1. True. 2. The blog actually provides the answer: When the Backup Nodes detect the failure, they will notify the Transaction coordinator that they committed the transaction successfully. In this scenario, there is no data loss because the data are backed up and can still be accessed an