GWphua commented on issue #17902: URL: https://github.com/apache/druid/issues/17902#issuecomment-2803588862
Hi @gianm, not sure if this is similar to what you are talking about. I am planning to monitor the groupers by the position of the buffers. Looking at the code, `ConcurrentGrouper` slices the large buffer up, and classes such as `BufferHashGrouper.java` slices the buffers further. Tracking buffers used by `ConcurrentGrouper` is useless, as the metrics will report 0, since the duplicated and sliced buffers in the lower layers are using different DirectByteBuffer objects. I am looking into tracking the position of DirectByteBuffers in these lower layers so that we can have an accurate read of the usage. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
