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Posted to user@ignite.apache.org by aMark <fe...@gmail.com> on 2018/01/11 06:01:34 UTC
How to identify if the data returned from cache is partial data due
to multiple node failures in partitioned cache
Hi,
We are using Ignite cache version 2.3 . We are using persistent cache in
Partitioned Mode having 4 cluster node running. We have configured caches
to have 1 backup.
I understand that if there are more than one node failure at a time, then
data present in the live cluster may not be complete data for a given cache.
In the above setup, when all four nodes are running, I get close to ~650K
key value pair for a cache. But if I bring down three nodes then I get close
to ~300K key values pair for the same cache.
If I dont have initial count of entries in the the cache, I dont know if the
entries returned is a full set of partial set.
Is there an API/configuration in Ignite to identify that cache might not
have complete data in the cluster for the time being (due to any reason) ?
Thanks,
--
Sent from: http://apache-ignite-users.70518.x6.nabble.com/
Re: How to identify if the data returned from cache is partial data
due to multiple node failures in partitioned cache
Posted by Evgenii Zhuravlev <e....@gmail.com>.
Hi,
If all nodes, that hold partition left topology, will be thrown event
EventType.EVT_CACHE_REBALANCE_PART_DATA_LOST. You can listen to it using
IgniteEvents.localListen(lsnr, EventType.EVT_CACHE_REBALANCE_PART_DATA_LOST)
Regards,
Evgenii
2018-01-11 9:01 GMT+03:00 aMark <fe...@gmail.com>:
> Hi,
>
> We are using Ignite cache version 2.3 . We are using persistent cache in
> Partitioned Mode having 4 cluster node running. We have configured caches
> to have 1 backup.
>
> I understand that if there are more than one node failure at a time, then
> data present in the live cluster may not be complete data for a given
> cache.
>
> In the above setup, when all four nodes are running, I get close to ~650K
> key value pair for a cache. But if I bring down three nodes then I get
> close
> to ~300K key values pair for the same cache.
>
> If I dont have initial count of entries in the the cache, I dont know if
> the
> entries returned is a full set of partial set.
>
> Is there an API/configuration in Ignite to identify that cache might not
> have complete data in the cluster for the time being (due to any reason) ?
>
>
>
> Thanks,
>
>
>
>
>
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>