compact

Removes information between two proven versions of the database

Definition

compact allows the compaction of data between two proven database versions.

The compact command has the following form:

JavaScript

{
    "compact"  : {
        "startVersion" : <number>,
        "endVersion" : <number>
    }
}

The command accepts the following fields:

Field	Type	Mandatory
compact.startVersion	number	yes
compact.endVersion	number	yes

Output

The returned document contains a subset of the following fields:

Field	Type	Description
ok	number	The status of the command.
proofsDeleted	number	The number of proofs deleted.
versionsDeleted	number	The number of versions deleted.
documentsDeleted	document	The number of documents deleted in the specified collections.

Examples

Compact between two versions

The following command compacts documents between versions 100 and 200.

JavaScript

{
    "compact" : {
        "startVersion" : 100,
        "endVersion" : 200
    }
}

The response would be the following:

JavaScript

{
    "ok" : 1,
    "proofsDeleted" : NumberLong(0),
    "versionsDeleted" : NumberLong(8),
    "documentsDeleted" : {
        "totalDocuments" : NumberLong(24),
        "compactable7093681" : NumberLong(24)
    }
}