Fang-Yu Rao created IMPALA-13666:
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Summary: Add a new constructor for ImpalaHdfsPartition after
IMPALA-13154
Key: IMPALA-13666
URL: https://issues.apache.org/jira/browse/IMPALA-13666
Project: IMPALA
Issue Type: Task
Reporter: Fang-Yu Rao
Assignee: Fang-Yu Rao
IMPALA-13154 added the method {{getFileMetadataStats()}} to
[HdfsPartition.java|https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java]
that would return the file metadata statistics. The method requires the
corresponding {{HdfsPartition}} instance to have a non-null field of
'{{{}fileMetadataStats_{}}}'.
However, currently in order to set up the field of '{{{}fileMetadataStats_{}}}'
when instantiating an {{{}HdfsPartition{}}}, we also need to provide the value
of the field '{{{}id_{}}}', which should be unique across the whole catalog for
each partition. Since it's possible that we may not always know what value we
should be using for '{{{}id_{}}}' when instantiating an {{HdfsPartition}} via a
third party extension, if would be good that we add a new constructor for
{{HdfsPartition}} to allow us to set up the field of
'{{{}fileMetadataStats_{}}}' when instantiating an {{HdfsPartition}} without
having to provide the value of the field '{{{}id_{}}}'.
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