How to automatic reset state of lost partitions?

[Dmitry Lazurkin <di...@gmail.com>]

Hello,

I have 3 nodes with backups=1 and partitionLostPolicy=READ_WRITE_SAFE.
Node-2 and node-3 own partition 2. I shutdown node-2 and node-3. After
that cluster has partition 2 in state=LOST.

Now I should call resetLostPartitions for restore state of partition 2.
For now I see only one way for automation of this process:

- Wait all nodes from baseline toplogy

- Check existence of lost partitions in cluster

- Call Ignite#resetLostPartitions

Is it good? Does someone know better solution?

Thank you.

Re: How to automatic reset state of lost partitions?

[aealexsandrov <ae...@gmail.com>]

Hi,

Yes, it's the correct solution.

Note that resetLostPartitions just returned the partitions to a normal
state. So it makes sense to call it when all nodes from baseline will be
online.

In case if you have 3 nodes with 1 backup for all caches and two nodes go
down and only one node back then better will be setting a new baseline for
that 2 nodes. The data should be rebalanced in this case.

BR,
Andrei



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