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https://issues.apache.org/jira/browse/DRILL-5846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16299566#comment-16299566
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ASF GitHub Bot commented on DRILL-5846:
---------------------------------------
Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/1060#discussion_r158183682
--- Diff: exec/vector/src/main/codegen/templates/NullableValueVectors.java
---
@@ -15,13 +15,19 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+import org.apache.drill.exec.proto.UserBitShared.SerializedField;
import org.apache.drill.exec.memory.AllocationManager.BufferLedger;
import org.apache.drill.exec.util.DecimalUtility;
import org.apache.drill.exec.vector.BaseDataValueVector;
import org.apache.drill.exec.vector.NullableVectorDefinitionSetter;
+import org.apache.drill.exec.vector.NullableVarCharVector.Accessor;
+import org.apache.drill.exec.vector.NullableVarCharVector.Mutator;
--- End diff --
All nullable vectors need the `VarChar` accessor and mutator?
> Improve Parquet Reader Performance for Flat Data types
> -------------------------------------------------------
>
> Key: DRILL-5846
> URL: https://issues.apache.org/jira/browse/DRILL-5846
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Parquet
> Affects Versions: 1.11.0
> Reporter: salim achouche
> Assignee: salim achouche
> Labels: performance
> Fix For: 1.13.0
>
>
> The Parquet Reader is a key use-case for Drill. This JIRA is an attempt to
> further improve the Parquet Reader performance as several users reported that
> Parquet parsing represents the lion share of the overall query execution. It
> tracks Flat Data types only as Nested DTs might involve functional and
> processing enhancements (e.g., a nested column can be seen as a Document;
> user might want to perform operations scoped at the document level that is no
> need to span all rows). Another JIRA will be created to handle the nested
> columns use-case.
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