Hi, DataStreamer depends on the allowOverwrite flag.
https://apacheignite.readme.io/docs/data-streamers#section-allow-overwrite The default value is false to get the best performance. But it also means that metrics will not be updated. If you set allowOverwrite true then data streamer will work similar to usual cache operation and metrics should work fine in this case. BR, Andrei -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/