pvary commented on a change in pull request #2246:
URL: https://github.com/apache/iceberg/pull/2246#discussion_r577590629
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File path: mr/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergSerDe.java
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@@ -88,18 +88,24 @@ public void initialize(@Nullable Configuration
configuration, Properties serDePr
}
}
- configuration.setBoolean(InputFormatConfig.CASE_SENSITIVE, false);
- String[] selectedColumns =
ColumnProjectionUtils.getReadColumnNames(configuration);
- // When same table is joined multiple times, it is possible some selected
columns are duplicated,
- // in this case wrong recordStructField position leads wrong value or
ArrayIndexOutOfBoundException
- String[] distinctSelectedColumns =
Arrays.stream(selectedColumns).distinct().toArray(String[]::new);
- Schema projectedSchema = distinctSelectedColumns.length > 0 ?
- tableSchema.caseInsensitiveSelect(distinctSelectedColumns) :
tableSchema;
- // the input split mapper handles does not belong to this table
- // it is necessary to ensure projectedSchema equals to tableSchema,
- // or we cannot find selectOperator's column from inspector
- if (projectedSchema.columns().size() != distinctSelectedColumns.length) {
+ Schema projectedSchema;
+ if (serDeProperties.get(HiveIcebergStorageHandler.WRITE_KEY) != null) {
+ // when writing out data, we should not do projection pushdown
projectedSchema = tableSchema;
+ } else {
+ configuration.setBoolean(InputFormatConfig.CASE_SENSITIVE, false);
Review comment:
I think we should leave this config setting outside the if statement
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