Fix row group alignment in ORC writer #15789
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vuule
added
bug
ttnghia
reviewed
May 20, 2024
ttnghia
reviewed
May 20, 2024
ttnghia
reviewed
May 20, 2024
…bug-orc-writer-row_group-alignment
ttnghia
approved these changes
May 21, 2024
mhaseeb123
approved these changes
May 21, 2024
vyasr
approved these changes
May 21, 2024
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Description
Closes #15775
ORC writer encodes null mask bits in multiples of eight to avoid issues with other readers reading partial encoded bytes. When this does not align with row groups, the null mask encode boundaries are moved to align to multiples of eight. There was a bug in the alignment code that caused a pointless shift by 8 bits and, then, issues in encode. This PR fixes the unnecessary shift.
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