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[NSE-931] Reuse partition vectors for arrow scan #935
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@jackylee-ch can you please do a rebase? |
I have fixed the conflict. |
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What changes were proposed in this pull request?
Every time we read a arrow record batch from Parquet，we will use partitionValues to create partitionVectors and add them to record batch. Actually, the partition value won't change in the reading of one PartitionFile. We can create one partitionVectors for each PartitionFile and reuse it until task finished.
How was this patch tested?
unit tests.