kou commented on PR #45561: URL: https://github.com/apache/arrow/pull/45561#issuecomment-2684583125
Hmm. It's natural for dense union. In general, a dense union has multiple children. (If a dense union have only one child, we don't need to use a dense union.) In the case, length of child and and length of types (or offsets) are different. Physical layout examples have comments that explain what the value mean such as `# int64: col1.c: "ARROW:null_count:exact"` and `# float64: col1.c: "ARROW:max_value:approximate"`. Were these comments not helpful? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
