HeartSaVioR opened a new pull request #26109: [SPARK-29461][SQL] Measure 
records being updated for JDBC writer
URL: https://github.com/apache/spark/pull/26109
 
 
   ### What changes were proposed in this pull request?
   
   This patch adds the functionality to measure records being written for JDBC 
writer. In reality, the value is meant to be a number of records being updated 
from queries, as per JDBC spec it will return updated count.
   
   ### Why are the changes needed?
   
   Output metrics for JDBC writer are missing now. The value of "bytesWritten" 
is also missing, but we can't measure it from JDBC API.
   
   ### Does this PR introduce any user-facing change?
   
   No.
   
   ### How was this patch tested?
   
   Unit test added.

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