wyb commented on a change in pull request #4524:
URL: https://github.com/apache/incubator-doris/pull/4524#discussion_r483938964
##########
File path:
fe/spark-dpp/src/main/java/org/apache/doris/load/loadv2/dpp/SparkDpp.java
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@@ -507,17 +558,6 @@ private void processRollupTree(RollupTreeNode rootNode,
dataframe = dataframe.withColumn(mappingColumn,
functions.expr(mappingDescription).cast(dstTableSchema.apply(mappingColumn).dataType()));
}
- // projection and reorder the columns
- dataframe.createOrReplaceTempView("src_table");
- StringBuilder selectSqlBuilder = new StringBuilder();
- selectSqlBuilder.append("select ");
- for (String name : dstColumnNames) {
- selectSqlBuilder.append(name + ",");
- }
- selectSqlBuilder.deleteCharAt(selectSqlBuilder.length() - 1);
- selectSqlBuilder.append(" from src_table");
- String selectSql = selectSqlBuilder.toString();
- dataframe = spark.sql(selectSql);
Review comment:
Don't delete. Source data schema may be different from load table schema.
These code is used for projection and reorder columns according to columns
order in table schema.
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