[GitHub] [incubator-uniffle] whbing commented on pull request #192: [ISSUE-186][Feature] Use I/O cost time to select storage paths

[GitBox <gi...@apache.org>]

whbing commented on PR #192:
URL: https://github.com/apache/incubator-uniffle/pull/192#issuecomment-1235456858

   > If you just use the single w/r time to judge whether HDFS is usable or not, it's ok. But you use the single w/r time as the metric of system load, it seems wrong. Could we get some metrics of HDFS? It may be more accurate. I don't know whether HDFS provide similar metrics.
   
   Just my opinion, our goal is to choose a faster cluster, and from this point of view it makes the most sense to use w/r speed for evaluation. There are many factors that affect the w/r speed, such as NameNode RPC, DataNode IO, Network, we don't need to care about these. 


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