Garbage collection rule specified as a protobuf.
Must serialize to at most 500 bytes.
NOTE: Garbage collection executes opportunistically in the background, and
so it's possible for reads to return a cell even if it matches the active
GC expression for its family.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eColumnFamily\u003c/code\u003e class within the Google Cloud Bigtable Administration v2 API is version 3.24.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eColumnFamily\u003c/code\u003e class represents a set of columns within a table that share a common configuration in the Google Cloud Bigtable.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eColumnFamily\u003c/code\u003e class inherits from \u003ccode\u003eobject\u003c/code\u003e and implements interfaces such as \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eColumnFamily\u003c/code\u003e class has properties like \u003ccode\u003eGcRule\u003c/code\u003e to manage garbage collection rules and \u003ccode\u003eValueType\u003c/code\u003e to define the type of data in cell values.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eColumnFamily\u003c/code\u003e class has a constructor, which allows a user to initialize a new \u003ccode\u003eColumnFamily\u003c/code\u003e object, either empty, or by passing an existing object.\u003c/p\u003e\n"]]],[],null,["# Google Cloud Bigtable Administration v2 API - Class ColumnFamily (3.29.0)\n\nVersion latestkeyboard_arrow_down\n\n- [3.29.0 (latest)](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/latest/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.28.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.28.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.27.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.27.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.26.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.26.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.25.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.25.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.24.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.24.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.23.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.23.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.22.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.22.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.21.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.21.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.20.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.20.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.19.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.19.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.18.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.18.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.17.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.17.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.16.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.16.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.15.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.15.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.14.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.14.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.13.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.13.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.12.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.12.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.11.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.11.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.10.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.10.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.9.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.9.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.8.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.8.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.7.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.7.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.6.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.6.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.5.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.5.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.4.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.3.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.2.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.1.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.1.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [3.0.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/3.0.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.9.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.9.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.8.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.8.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.7.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.7.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.6.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.6.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.5.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.5.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily)\n- [2.4.0](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/2.4.0/Google.Cloud.Bigtable.Admin.V2.ColumnFamily) \n\n public sealed class ColumnFamily : IMessage\u003cColumnFamily\u003e, IEquatable\u003cColumnFamily\u003e, IDeepCloneable\u003cColumnFamily\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Google Cloud Bigtable Administration v2 API class ColumnFamily.\n\nA set of columns within a table which share a common configuration. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e ColumnFamily \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[ColumnFamily](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/latest/Google.Cloud.Bigtable.Admin.V2.ColumnFamily), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[ColumnFamily](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/latest/Google.Cloud.Bigtable.Admin.V2.ColumnFamily), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[ColumnFamily](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/latest/Google.Cloud.Bigtable.Admin.V2.ColumnFamily), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.Bigtable.Admin.V2](/dotnet/docs/reference/Google.Cloud.Bigtable.Admin.V2/latest/Google.Cloud.Bigtable.Admin.V2)\n\nAssembly\n--------\n\nGoogle.Cloud.Bigtable.Admin.V2.dll\n\nConstructors\n------------\n\n### ColumnFamily()\n\n public ColumnFamily()\n\n### ColumnFamily(ColumnFamily)\n\n public ColumnFamily(ColumnFamily other)\n\nProperties\n----------\n\n### GcRule\n\n public GcRule GcRule { get; set; }\n\nGarbage collection rule specified as a protobuf.\nMust serialize to at most 500 bytes.\n\nNOTE: Garbage collection executes opportunistically in the background, and\nso it's possible for reads to return a cell even if it matches the active\nGC expression for its family.\n\n### ValueType\n\n public Type ValueType { get; set; }\n\nThe type of data stored in each of this family's cell values, including its\nfull encoding. If omitted, the family only serves raw untyped bytes.\n\nFor now, only the `Aggregate` type is supported.\n\n`Aggregate` can only be set at family creation and is immutable afterwards.\n\nIf `value_type` is `Aggregate`, written data must be compatible with:\n\n- `value_type.input_type` for `AddInput` mutations"]]