Hello, community:
I have a cluster ,with three nodes.
I have two cache, that AtomicityMode is TRANSACTIONAL and Backups
number is two and WriteSynchronizationMode is PRIMARY_SYNC
I use IgniteClientSpringTransactionManagerwith OPTIMISTIC transaction
and SERIALIZABLE concurrency mode.
pseudocode like below
ignite.transactions().txStart
if(acahce.get(key)==null) {
aCahce.put(key,value)
bCahce.put(key,value)
}
tx.commit()
Sometimes I find aCahce.get(key) costs 80ms ,Sometimes that costs only 5ms.
and three ignite nodes usage of cpu and io and memory all not high.
and client node usage of cpu and io and memory all not high.
but I use tcpdump to find that Between nodes, there are over 40 TCP
retransmissions per second.
So is this a network issue?
