Paul Rogers created DRILL-5597:
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Summary: Incorrect "bits" vector allocation in nullable vectors
allocateNew()
Key: DRILL-5597
URL: https://issues.apache.org/jira/browse/DRILL-5597
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.10.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Priority: Minor
Fix For: 1.11.0
Consider the following code in a generated nullable vector, such as
{{NullableBigIntVector}}:
{code}
public void allocateNew(int valueCount) {
try {
values.allocateNew(valueCount);
bits.allocateNew(valueCount+1);
{code}
There are as may "bits" entries as data entries, no need to allocate an extra
1. When the {{valueCount}} is a power of two, the error will cause the
allocation of twice as large a vector as necessary. (128K, say, instead of 64K,
since 64K+1 power-of-two rounds to 128K.)
By contrast the +1 correction is needed for offset vectors, but the "bits"
vector is not an offset vector.
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