leventov commented on issue #7570: Use historical nodes to host shared cache URL: https://github.com/apache/incubator-druid/issues/7570#issuecomment-488315686 Historical nodes are designed for restarts, including restarts of large groups of nodes nearly at the same time. We don't want such restarts to disrupt the quality of service. So the cache should be replicated at least 2x. This requirement makes simple local embeddable cache insufficient (unless we want to basically solve again all the hard problems with reliable replicated cluster services). So Ignite looks to me like a more reasonable solution. @devozerov would appreciate your opinion.
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