ShreelekhyaG opened a new pull request #4226:
URL: https://github.com/apache/carbondata/pull/4226
### Why is this PR needed?
If `carbon.enable.vector.reader` is disabled and parquet/orc segments are
added to carbon table. Then on query, it fails with
`java.lang.ClassCastException: org.apache.spark.sql.vectorized.ColumnarBatch
cannot be cast to org.apache.spark.sql.catalyst.InternalRow`.
When vector reader property is disabled, while scanning `ColumnarBatchScan `
`supportBatch `would be overridden to false but external file format like
`ParuetFileFormat ` `supportBatch `is not overriden and it takes default as
true.
### What changes were proposed in this PR?
Made changes to override `supportBatch `of external file formats based on
`carbon.enable.vector.reader` property.
### Does this PR introduce any user interface change?
- No
### Is any new testcase added?
- Yes
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