sunchao commented on a change in pull request #29498:
URL: https://github.com/apache/spark/pull/29498#discussion_r474444907
##########
File path: docs/tuning.md
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@@ -264,12 +264,16 @@ parent RDD's number of partitions. You can pass the level
of parallelism as a se
or set the config property `spark.default.parallelism` to change the default.
In general, we recommend 2-3 tasks per CPU core in your cluster.
+# Parallel Listing on Input Paths
Review comment:
Good catch. Fixing.
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File path: docs/sql-performance-tuning.md
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@@ -114,6 +114,28 @@ that these options will be deprecated in future release as
more optimizations ar
</td>
<td>1.1.0</td>
</tr>
+ <tr>
+
<td><code>spark.sql.sources.parallelPartitionDiscovery.threshold</code></td>
+ <td>32</td>
+ <td>
+ Configures the threshold to enable parallel listing for job input paths.
If the number of
+ input paths is larger than this threshold, Spark will use parallel
listing on the driver side.
Review comment:
Will do.
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