What is the meaning of 'documentSize' field in collection figures?

[Kevin Lv]

Hi, 

When I use HTTP GET /_api/collection/{collection-name}/figures to count one collection size(https://www.arangodb.com/docs/3.5/http/collection-getting.html#return-statistics-for-a-collection), 

it returns as below:

{ "error": false, "code": 200, "type": 2, "status": 3, "name": "tag", "waitForSync": false, "objectId": "1209032", "cacheEnabled": false, "figures": { "indexes": { "count": 3, "size": 179944 }, "documentsSize": 1855548, "cacheInUse": false, "cacheSize": 0, "cacheUsage": 0 }, "keyOptions": { "allowUserKeys": true, "type": "traditional", "lastValue": 5537 }, "globallyUniqueId": "c287039421/", "statusString": "loaded", "id": "1209033", "count": 3161, "isSystem": false }

I found that this response format not as the note described, I guess the 'documentSize' may intend to the result I want to kown about this collection, could anyone explains this to me?

P.S. I am using ArangDB 3.5.2(Community Edition).

Thanks,

Kevin

[Wilfried Gösgens]

Hi,

Please note that ArangoDB 3.5 has been EOLed for over two years.

Please upgrade to at least ArangoDB 3.8

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[Kevin Lv]

Thanks for your advice, I am considering  it.

I want to backup my data, at first I want to get data statistics easily.

Thanks & Regards

Wilfried Gösgens <doth...@gmail.com> 于2022年9月26日周一 23:03写道：

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[Simran Spiller]

The documentsSize attribute is only available if you use the RocksDB storage engine. It's an approximation in bytes that takes the files and memtables of the Document column family into account.

With the MMFiles storage engine, you can take a look at the datafiles.fileSize figure. You can also check the size of all files in the "databases" folder in the database directory.