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From joewang ...@joewang.net>
Subject igfs-meta behavior when node restarts
Date Thu, 25 May 2017 23:50:33 GMT
I'm currently running Ignite as a Hadoop accelerator via IGFS backed by a
secondary HDFS store. The cluster currently functions as expected, but I'm
seeing some anomalies in the metrics reported by Ignite. In particular, on a
fresh cluster, when a node restarts (exits and rejoins), the igfs-meta TX
commit rate jumps up from ~0/sec to ~4/sec for all the nodes in the cluster.
This rate increases as additional nodes leave/join. From the looks of it, it
seems to be correlated to the TX rollback rate. Is there a reason why this
might be the case?

<http://apache-ignite-users.70518.x6.nabble.com/file/n13155/rollback.png> 

In the screenshot, I've restarted all the nodes in the cluster a little
after 14:30, and restarted one of the nodes around 16:30.



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