View Tablet Compaction Score

Request

GET /api/compaction_score?top_n={int}

Description

It is used to view tablet compaction scores on a BE node. The compaction score is calculated as the sum of the compaction scores of all rowsets in each tablet. The response is sorted by compaction_score in descending order.

Query parameters

• top_n

  Optional. A non-negative integer. If specified, only the top N tablets with the highest compaction scores are returned. If not specified, all tablets on the BE node are returned. top_n=0 returns an empty array.

Request body

None

Response

Returns a JSON array. Each element contains the following fields:

• tablet_id: Tablet ID. The value is returned as a string.
• compaction_score: Tablet compaction score. The value is returned as a string.

Example response:

[
    {
        "compaction_score": "5",
        "tablet_id": "42595"
    },
    {
        "compaction_score": "4",
        "tablet_id": "10034"
    }
]

Error handling

If top_n is not a valid non-negative integer, the API returns HTTP 400 with an error such as invalid argument: top_n=wrong.

Examples

View the top 10 tablets with the highest compaction scores:

curl "http://127.0.0.1:8040/api/compaction_score?top_n=10"