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From vkulichenko <valentin.kuliche...@gmail.com>
Subject Re: Task failover in ignite
Date Mon, 01 Oct 2018 21:46:21 GMT

When a primary node for a partition dies, former backup node for this
partition becomes new primary. Therefore there is no need to wait for
rebalancing in this case, data is already there. By default job will be
automatically remapped to that node, but with 'withNoFailover()' you'll have
to retry manually.

In addition, affinityRun/Call acquires a partition lock for a duration of
computation to make sure data is not moved until it's completed. I.e. if
there is a new node that becomes a new owner for this partition, data for
this partition will not be evicted from previous primary until all
collocated computations are done.


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