package frostdb.schema.v1alpha2

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Group is a grouping of nodes.

Used in: Node, Schema

• string name = 1

  Name of the group.

• bool nullable = 2

  Wether the group is allowed to be null.

• bool repeated = 3

  Indicates whether the group is repeated.

• repeated Node nodes = 4

  Nodes that this group is composed of.

Leaf definition.

Used in: Node

• string name = 1

  Name of the column.

• optional StorageLayout storage_layout = 2

  Storage layout of the column.

Node is a node in a schema tree.

Used in: Group

• oneof type

  type can either be a leaf or a group.

  • Leaf leaf = 1

    Leaf node of the schema.

  • Group group = 2

    Group of other nodes for nested schemas.

Schema definition for a table.

Used in: table.v1alpha1.TableConfig

• optional Group root = 2

  Root node of the schema.

• repeated SortingColumn sorting_columns = 3

  Columns to sort by in the schema.

• bool unique_primary_index = 4

  UniquePrimaryIndex defines whether the primary index is unique. Duplicate (according to the sorting column) rows will be dropped on compaction.

SortingColumn definition.

Used in: Schema

• string path = 1

  Path to the leaf column to sort by.

• SortingColumn.Direction direction = 2

  Direction of the sorting.

• bool nulls_first = 3

  Whether nulls are the smallest or largest values.

Enum of possible sorting directions.

Used in: SortingColumn

• DIRECTION_UNKNOWN_UNSPECIFIED = 0

  Unknown direction.

• DIRECTION_ASCENDING = 1

  Sort in ascending order.

• DIRECTION_DESCENDING = 2

  Sort in descending order.

Storage layout describes the physical storage properties of a column.

Used in: Leaf

• StorageLayout.Type type = 1

  Type of the column.

• StorageLayout.Encoding encoding = 2

  Encoding of the column.

• StorageLayout.Compression compression = 3

  Compression of the column.

• bool nullable = 4

  Wether values in the column are allowed to be null.

• bool repeated = 5

  Indicates whether the parquet column is repeated.

Compression enum of a column.

Used in: StorageLayout

• COMPRESSION_NONE_UNSPECIFIED = 0

  No compression.

• COMPRESSION_SNAPPY = 1

  Snappy compression.

• COMPRESSION_GZIP = 2

  GZIP compression.

• COMPRESSION_BROTLI = 3

  Brotli compression.

• COMPRESSION_LZ4_RAW = 4

  LZ4_RAW compression.

• COMPRESSION_ZSTD = 5

  ZSTD compression.

Encoding enum of a column.

Used in: StorageLayout

• ENCODING_PLAIN_UNSPECIFIED = 0

  Plain encoding.

• ENCODING_RLE_DICTIONARY = 1

  Dictionary run-length encoding.

• ENCODING_DELTA_BINARY_PACKED = 2

  Delta binary packed encoding.

• ENCODING_DELTA_BYTE_ARRAY = 3

  Delta Byte Array encoding.

• ENCODING_DELTA_LENGTH_BYTE_ARRAY = 4

  Delta Length Byte Array encoding.

Type enum of a column.

Used in: StorageLayout

• TYPE_UNKNOWN_UNSPECIFIED = 0

  Unknown type.

• TYPE_STRING = 1

  Represents a string type.

• TYPE_INT64 = 2

  Represents an int64 type.

• TYPE_DOUBLE = 3

  Represents a double type.

• TYPE_BOOL = 4

  Represents a boolean type.

• TYPE_INT32 = 5

  Represents a int32 type.

• TYPE_UINT64 = 6

  Represents a uint64 type.