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https://issues.apache.org/jira/browse/ARROW-1710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16260093#comment-16260093
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ASF GitHub Bot commented on ARROW-1710:
---------------------------------------
icexelloss commented on a change in pull request #1341: [WIP] ARROW-1710:
[Java] Remove Non-Nullable Vectors
URL: https://github.com/apache/arrow/pull/1341#discussion_r152151282
##########
File path: java/vector/src/test/java/org/apache/arrow/vector/TestBitVector.java
##########
@@ -426,81 +405,81 @@ public void testReallocAfterVectorTransfer2() {
public void testBitVector() {
// Create a new value vector for 1024 integers
try (final BitVector vector = new BitVector(EMPTY_SCHEMA_PATH, allocator))
{
- final BitVector.Mutator m = vector.getMutator();
vector.allocateNew(1024);
- m.setValueCount(1024);
+ vector.setValueCount(1024);
// Put and set a few values
- m.set(0, 1);
- m.set(1, 0);
- m.set(100, 0);
- m.set(1022, 1);
+ vector.set(0, 1);
+ vector.set(1, 0);
+ vector.set(100, 0);
+ vector.set(1022, 1);
- m.setValueCount(1024);
+ vector.setValueCount(1024);
- final BitVector.Accessor accessor = vector.getAccessor();
- assertEquals(1, accessor.get(0));
- assertEquals(0, accessor.get(1));
- assertEquals(0, accessor.get(100));
- assertEquals(1, accessor.get(1022));
+ assertEquals(1, vector.get(0));
+ assertEquals(0, vector.get(1));
+ assertEquals(0, vector.get(100));
+ assertEquals(1, vector.get(1022));
- assertEquals(1022, accessor.getNullCount());
+ assertEquals(1020, vector.getNullCount());
Review comment:
My guess is old (non-nullable vector) checks how many values are "0" rather
than how many values are "set", so when you set two values to "0", they are
still counted in NullCount.
I think the new behavior makes more sense, although this could be backward
incompatible.
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> [Java] Decide what to do with non-nullable vectors in new vector class
> hierarchy
> ---------------------------------------------------------------------------------
>
> Key: ARROW-1710
> URL: https://issues.apache.org/jira/browse/ARROW-1710
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: Java - Vectors
> Reporter: Li Jin
> Assignee: Bryan Cutler
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> So far the consensus seems to be remove all non-nullable vectors.
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