[GitHub] [spark] cloud-fan commented on a diff in pull request #36377: [SPARK-39043][SQL] Spark SQL Hive client should not gather statistic by default.

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

cloud-fan commented on code in PR #36377:
URL: https://github.com/apache/spark/pull/36377#discussion_r865682677


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docs/sql-migration-guide.md:
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@@ -22,6 +22,10 @@ license: |
 * Table of contents
 {:toc}
 
+## Upgrading from Spark SQL 3.3 to 3.4
+  
+  - Since Spark 3.4, Spark disable `hive.stats.autogather` when create `HiveClientImpl`. To restore the behavior before Spark 3.4, you can set `spark.hadoop.hive.stats.autogather` to `true`.

Review Comment:
   ```suggestion
     - Since Spark 3.4, Spark disables `hive.stats.autogather` by default, which means Hive tables won't automatically update statistics that can be consumed by Hive (not Spark). To restore the behavior before Spark 3.4, you can set `spark.hadoop.hive.stats.autogather` to `true`.
   ```



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