[I] Improve CometSortMergeJoin statistics [datafusion-comet]

["planga82 (via GitHub)" <gi...@apache.org>]

planga82 opened a new issue, #303:
URL: https://github.com/apache/datafusion-comet/issues/303

   ### What is the problem the feature request solves?
   
   Add all statistics SortMergeJoinExec datafusion node provides.
   
   ### Describe the potential solution
   
   Override metrics map in CometSortMergeJoin to provide all available metrics
   
   ### Additional context
   
   **Current metrics:**
   ```
   output_rows
   Elapsed_compute
   ```
   
   **All available metrics**
   ```
       /// Total time for joining probe-side batches to the build-side batches
       join_time: metrics::Time,
       /// Number of batches consumed by this operator
       input_batches: metrics::Count,
       /// Number of rows consumed by this operator
       input_rows: metrics::Count,
       /// Number of batches produced by this operator
       output_batches: metrics::Count,
       /// Number of rows produced by this operator
       output_rows: metrics::Count,   
       /// Peak memory used for buffered data.
       /// Calculated as sum of peak memory values across partitions
       peak_mem_used: metrics::Gauge
   ```
   


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Re: [I] Improve CometSortMergeJoin statistics [datafusion-comet]

["andygrove (via GitHub)" <gi...@apache.org>]

andygrove closed issue #303: Improve CometSortMergeJoin statistics
URL: https://github.com/apache/datafusion-comet/issues/303


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