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Enumeration MetadataVersion

Logical types, vector layouts, and schemas

Index

Enumeration members

Enumeration members

V1

V1 = 0

0.1.0 (October 2016).

V2

V2 = 1

0.2.0 (February 2017). Non-backwards compatible with V1.

V3

V3 = 2

0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.

V4

V4 = 3

= 0.8.0 (December 2017). Non-backwards compatible with V3.

V5

V5 = 4

= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4 metadata and IPC messages). Implementations are recommended to provide a V4 compatibility mode with V5 format changes disabled.

Incompatible changes between V4 and V5:

  • Union buffer layout has changed. In V5, Unions don't have a validity bitmap buffer.

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