davisusanibar commented on code in PR #14382:
URL: https://github.com/apache/arrow/pull/14382#discussion_r993848153
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docs/source/java/dataset.rst:
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@@ -228,3 +250,25 @@ native objects after using. For example:
AutoCloseables.close(factory, dataset, scanner);
If user forgets to close them then native object leakage might be caused.
+
+Development Guidelines
+======================
+
+* Related to the note about ScanOptions batchSize argument: Let's try to read
a Parquet file with gzip compression and 3 row groups:
+
+ .. code-block::
+
+ # Let configure ScanOptions as:
+ ScanOptions options = new ScanOptions(/*batchSize*/ 32768);
+
+ $ parquet-tools meta data4_3rg_gzip.parquet
+ file schema: schema
+ age: OPTIONAL INT64 R:0 D:1
+ name: OPTIONAL BINARY L:STRING R:0 D:1
+ row group 1: RC:4 TS:182 OFFSET:4
+ row group 2: RC:4 TS:190 OFFSET:420
+ row group 3: RC:3 TS:179 OFFSET:838
+
+ In this case, we are configuring ScanOptions batchSize argument equals to
Review Comment:
Thank you for that detail, let me add that detail
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