How do you fix affinity key backups in cache configuration?

[ndipiazza3565 <ni...@lucidworks.com>]

Was just hit with this error causing my whole ignite cluster to fail to
start:

org.apache.ignite.IgniteCheckedException: Affinity key backups mismatch (fix
affinity key backups in cache configuration or set
-DIGNITE_SKIP_CONFIGURATION_CONSISTENCY_CHECK=true system property)
[cacheName=ignite-atomics-sys-cache, localAffinityKeyBackups=1,
remoteAffinityKeyBackups=0, rmtNodeId=d663345e-x7ba-5c85-6144-1234a7d3f721]
	at
org.apache.ignite.internal.processors.cache.GridCacheUtils.checkAttributeMismatch(GridCacheUtils.java:1144)
~[ignite-core-1.7.0.jar:1.7.0]
	at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.checkCache(GridCacheProcessor.java:2915)
~[ignite-core-1.7.0.jar:1.7.0]
	at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.onKernalStart(GridCacheProcessor.java:756)
~[ignite-core-1.7.0.jar:1.7.0]
	at org.apache.ignite.internal.IgniteKernal.start(IgniteKernal.java:930)
[ignite-core-1.7.0.jar:1.7.0]
	at
org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start0(IgnitionEx.java:1739)
[ignite-core-1.7.0.jar:1.7.0]
	at
org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start(IgnitionEx.java:1589)
[ignite-core-1.7.0.jar:1.7.0]
	at org.apache.ignite.internal.IgnitionEx.start0(IgnitionEx.java:1042)
[ignite-core-1.7.0.jar:1.7.0]
	at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:569)
[ignite-core-1.7.0.jar:1.7.0]
	at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:516)
[ignite-core-1.7.0.jar:1.7.0]
	at org.apache.ignite.Ignition.start(Ignition.java:322)
[ignite-core-1.7.0.jar:1.7.0]

What does it mean by "fix affinity key backups in cache configuration" ? 



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Re: How do you fix affinity key backups in cache configuration?

["slava.koptilin" <sl...@gmail.com>]

Hello,

It looks like you trying to start node which has an inconsistent
configuration for atomic types.
Please check that all nodes in the cluster (clients and servers) have the
identical configuration [1].

something like the following:
<property name="atomicConfiguration">
            <bean
class="org.apache.ignite.configuration.AtomicConfiguration">
                <property name="backups" value="1"/>
            </bean>
</property>

[1] https://apacheignite.readme.io/docs/atomic-types#atomic-configuration

Thanks!



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