warriersruthi opened a new pull request #2751:
URL: https://github.com/apache/hive/pull/2751
This covers the following sub-tasks as well:
HIVE-25554: Upgrade arrow version to 0.15
HIVE-25555: ArrowColumnarBatchSerDe should store map natively instead of
converting to list
What changes were proposed in this pull request?
a. Upgrading arrow version to version 0.15.0 (where map data-type is
supported)
b. Modifying ArrowColumnarBatchSerDe and corresponding
Serializer/Deserializer to not use list as a workaround for map and use the
arrow map data-type instead
c. Taking care of creating non-nullable struct and non-nullable key type for
the map data-type in ArrowColumnarBatchSerDe
Why are the changes needed?
Currently ArrowColumnarBatchSerDe converts map datatype as a list of structs
data-type (where struct is containing the key-value pair of the map).
This causes issues when reading Map datatype using llap-ext-client as it
reads a list of structs instead.
HiveWarehouseConnector which uses the llap-ext-client throws exception when
the schema (containing Map data type) is different from actual data (list of
structs).
This change includes the fix for this issue.
Does this PR introduce any user-facing change?
No
How was this patch tested?
Enabled back the Arrow specific tests in Hive code
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### What changes were proposed in this pull request?
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### Why are the changes needed?
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