Github user cenyuhai commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1142#discussion_r126298624
--- Diff:
integration/hive/src/main/java/org/apache/carbondata/hive/CarbonHiveRecordReader.java
---
@@ -88,17 +90,12 @@ private void initialize(InputSplit inputSplit,
Configuration conf) throws IOExce
} catch (QueryExecutionException e) {
throw new IOException(e.getMessage(), e.getCause());
}
- if (valueObj == null) {
- valueObj =
- new ArrayWritable(Writable.class, new
Writable[queryModel.getProjectionColumns().length]);
- }
-
final TypeInfo rowTypeInfo;
final List<String> columnNames;
List<TypeInfo> columnTypes;
// Get column names and sort order
final String colIds = conf.get("hive.io.file.readcolumn.ids");
- final String columnNameProperty =
conf.get("hive.io.file.readcolumn.names");
+ final String columnNameProperty =
conf.get(serdeConstants.LIST_COLUMNS);
--- End diff --
why change to serdeConstants.LIST_COLUMNSï¼ I had got columnNameProperty
from serdeConstants.LIST_COLUMNS, but I found that the columns in
serdeConstants.LIST_COLUMNS sometimes contains columns which don't belong to
this table
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