abstractdog commented on PR #5558:
URL: https://github.com/apache/hive/pull/5558#issuecomment-2499869174

   > LGTM, I have a minor question since I'm new to IOStatistics. Do we drop 
`ioStats.gauges()` because Tez does not use it or `gauges()` returns redundant 
values?
   
   thanks for taking a look!
   in gauges I found things like below:
   ```
   gauges=((stream_write_block_uploads_data_pending=3228222)
   (stream_write_block_uploads_pending=3584));
   ```
   they look a bit confusing to aggregate on DAG level: they reflect current 
state of something on task thread level, that loses its meaning while 
aggregated on DAG-level (of tasks running on different nodes at different 
times), let me know if I'm missing something


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