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https://issues.apache.org/jira/browse/DRILL-7473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16997173#comment-16997173
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ASF GitHub Bot commented on DRILL-7473:
---------------------------------------
ihuzenko commented on pull request #1933: DRILL-7473: Parquet reader failed to
get field of repeated map
URL: https://github.com/apache/drill/pull/1933#discussion_r358173016
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/validate/BatchValidator.java
##########
@@ -293,14 +292,20 @@ private void validateVector(String name, ValueVector
vector) {
// structure to check.
} else if (vector instanceof BaseRepeatedValueVector) {
validateRepeatedVector(name, (BaseRepeatedValueVector) vector);
- } else if (vector instanceof RepeatedMapVector) {
- validateRepeatedMapVector(name, (RepeatedMapVector) vector);
+ } else if (vector instanceof AbstractRepeatedMapVector) {
Review comment:
Could you please clarify your comment below, for example
>Checking ```AbstractRepeatedMapVector``` includes DictVector, in order to
avoid NPE while getting value from ```NullReader```. The ```NullReader``` may
be returned when index points to the absent value in dict array, example query
```SELECT dict_array[3].keyInDict ... ``` .
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> Parquet reader failed to get field of repeated map
> --------------------------------------------------
>
> Key: DRILL-7473
> URL: https://issues.apache.org/jira/browse/DRILL-7473
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.17.0
> Reporter: Igor Guzenko
> Assignee: Bohdan Kazydub
> Priority: Blocker
> Fix For: 1.17.0
>
> Attachments: hive_alltypes.parquet
>
>
> Given query:
> {code:sql}
> select p.c16[0].m from dfs.tmp.`hive_alltypes.parquet` p;
> {code}
> Results into:
> {color:#FF0000}Error: SYSTEM ERROR: IllegalArgumentException: You tried to
> read a [find(String key)] type when you are using a field reader of type
> [SingleLikeRepeatedMapReaderImpl].{color}
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