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Tag: ignite

Ignite Communication SPI support for IPv6

I have read in multiple locations about Ignite having potential issues with IPv6 and we have been seeing similar communication issues within our Kubernetes setup with Ignite, where the communications spi seems to randomly fail. The Ignite docs state that “Ignite tries to support IPv4 and IPv6 but this c…

Apache Ignite: Caches unusable after reconnecting to Ignite servers

I am using Apache Ignite as a distributed cache and I am running into some fundamental robustness issues. If our Ignite servers reboot for any reason it seems like this breaks all of our Ignite clients, even after the Ignite servers come back online. This is the error the clients see when interacting with cac…

How to fix Ignite performance issues?

We use Ignite 2.7.6 in both server and client modes: two server and six clients. At first, each app node with client Ignite inside had 2G heap. Each Ignite server node had 24G offheap and 2G heap. With last app update we introduced new functionality which required about 2000 caches of 20 entires (user groups)…

Ignite heap not release, this is a memery leak?

I have a 20 minute pressure test during which the free JVM heap size drops from 97% to 3%. Even if I wait 5 hours, the amount of free space does not change. If I try to have a test again, the GC has too much work and causes a long JVM pause. I use 2.7 Ignite, I do not