sunchao commented on a change in pull request #31284:
URL: https://github.com/apache/spark/pull/31284#discussion_r562776331
##########
File path:
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedColumnReader.java
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@@ -122,7 +123,19 @@ public VectorizedColumnReader(
DictionaryPage dictionaryPage = pageReader.readDictionaryPage();
if (dictionaryPage != null) {
try {
- this.dictionary =
dictionaryPage.getEncoding().initDictionary(descriptor, dictionaryPage);
+ PrimitiveType primitiveType = descriptor.getPrimitiveType();
+ if (primitiveType.getOriginalType() == OriginalType.DECIMAL &&
Review comment:
could you add some comments for this code? also why it only affects
vectorized read path w/ dictionary pages?
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