Quanlong Huang created ORC-1122:
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Summary: Add buffer to decode the whole run in RleDecoderV2
Key: ORC-1122
URL: https://issues.apache.org/jira/browse/ORC-1122
Project: ORC
Issue Type: Improvement
Components: C++
Reporter: Quanlong Huang
Assignee: Quanlong Huang
This is a follow up task of ORC-1020 which didn't optimize the code path when
the run has nulls. Adding a buffer to decode the whole run at once can leverage
the improvement of ORC-1020. Not just for the DIRECT encoding, this also
benifits other encodings like PATCHED_BASE and DELTA. It also helps to remove
the state variables in RleDecoderV2 and improves the code redability.
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