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https://issues.apache.org/jira/browse/DRILL-6126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372442#comment-16372442
]
ASF GitHub Bot commented on DRILL-6126:
---------------------------------------
Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/1125#discussion_r169859837
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorInitializer.java
---
@@ -97,7 +97,7 @@ public void allocateBatch(VectorAccessible va, int
recordCount) {
}
}
- private void allocateVector(ValueVector vector, String prefix, int
recordCount) {
+ public void allocateVector(ValueVector vector, String prefix, int
recordCount) {
--- End diff --
Note the error in the member variable in this class:
```
private Map<String, AllocationHint> hints = new HashMap<>();
```
Should be a case insensitive map.
> Allocate memory for value vectors upfront in flatten operator
> -------------------------------------------------------------
>
> Key: DRILL-6126
> URL: https://issues.apache.org/jira/browse/DRILL-6126
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Padma Penumarthy
> Assignee: Padma Penumarthy
> Priority: Critical
> Fix For: 1.12.0
>
>
> With recent changes to control batch size for flatten operator, we figure out
> row count in the output batch based on memory. Since we know how many rows we
> are going to include in the batch, we can also allocate the memory needed
> upfront instead of starting with initial value (4096) and doubling, copying
> every time we need more.
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