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https://issues.apache.org/jira/browse/PHOENIX-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14543365#comment-14543365
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Dumindu Buddhika commented on PHOENIX-777:
------------------------------------------
New fixedwidth array serialization format as discussed with [~ram_krish]
[ElementBytes] [BitSet for tracking nulls] [BitSet offset] [separator byte]
[serialization version number].
Since there is no serialization version number at the end of array in current
serialization format, last two bytes(separator byte and version number) are
checked to identify serialization version at the deserialization process to
preserve backward compatibility.
In case of primitive type arrays, at convertObjectArrayToPrimitiveArray
{code}
@Override
public Object convertObjectArrayToPrimitiveArray(Object[] elements) {
intArr = new int[elements.length];
int i = 0;
for (Object o : elements) {
if (o != null) {
intArr[i] = (Integer) o;
}
i++;
}
return intArr;
}
{code}
As null elements are considered as 0's nulls do not stay as nulls. So there is
an issue.
> Support null value for fixed length ARRAY
> -----------------------------------------
>
> Key: PHOENIX-777
> URL: https://issues.apache.org/jira/browse/PHOENIX-777
> Project: Phoenix
> Issue Type: Task
> Reporter: James Taylor
> Assignee: Dumindu Buddhika
>
> A null value for a fixed length array can be handled with a bitset tacked on
> the end of the array. If an element is set to null, then the bit at that
> index is set. Trailing nulls are not stored and an attempt to access an array
> past the current size returns null.
> Current behavior,
> PBinaryArray - Throws an exception when a null is inserted.
> PBooleanArray - null is considered as false when a null is inserted.
> PCharArray - Throws an exception when a null is inserted.
> PDateArray - Throws an exception when a null is inserted.
> PDoubleArray - null is considered as 0.0 when a null is inserted.
> PFloatArray - null is considered as 0.0 when a null is inserted.
> PIntegerArray - null is considered as 0 when a null is inserted.
> PLongArray - null is considered as 0 when a null is inserted.
> PSmallIntArray - null is considered as 0 when a null is inserted.
> PTimeArray - Throws an exception when a null is inserted.
> PTimeStampArray - Throws an exception when a null is inserted.
> PTinyIntArray - null is considered as 0 when a null is inserted.
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