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https://issues.apache.org/jira/browse/IMPALA-6503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16702869#comment-16702869
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Quanlong Huang commented on IMPALA-6503:
----------------------------------------
[~tarmstrong] Thank you, Tim! I have two questions about the nested
TupleDescriptor.
1. Can I assume that all SlotDescriptors inside the same TupleDescriptor will
have the same length in their col_path?
For example, suppose the table schema is
{code}
table (
myId int,
myArray array<int>
)
{code}
Is the following TupleDescriptor illegal?
{code}
Tuple(tuple_path=[], slots=[
Slot(type=INT, col_path=[0]),
Slot(type=INT, col_path=[1,0]),
Slot(type=INT, col_path=[1,1]),
])
{code}
2. Can I assume that col_path of a SlotDescriptor will have exactly one more
item than the tuple_path of its TupleDescriptor?
For example, is the following TupleDescriptor illegal?
{code}
Tuple(tuple_path=[], slots=[
Slot(type=INT, col_path=[1,0]),
Slot(type=INT, col_path=[1,1])
])
{code}
> Support reading complex types from ORC format files
> ---------------------------------------------------
>
> Key: IMPALA-6503
> URL: https://issues.apache.org/jira/browse/IMPALA-6503
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
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