Compaction Action

This API is used to view the overall compaction status of a BE node or the compaction status of a specified tablet. It can also be used to manually trigger Compaction.

View Compaction status

The overall compaction status of the node

(TODO)

Specify the compaction status of the tablet

curl -X GET http://be_host:webserver_port/api/compaction/show?tablet_id=xxxx\&schema_hash=yyyy

If the tablet does not exist, an error in JSON format is returned:

{
    "status": "Fail",
    "msg": "Tablet not found"
}

If the tablet exists, the result is returned in JSON format:

{
    "cumulative point": 50,
    "last cumulative failure time": "2019-12-16 18:13:43.224",
    "last base failure time": "2019-12-16 18:13:23.320",
    "last cumu success time": "2019-12-16 18:12:15.110",
    "last base success time": "2019-12-16 18:11:50.780",
    "rowsets": [
        "[0-48] 10 DATA OVERLAPPING",
        "[49-49] 2 DATA OVERLAPPING",
        "[50-50] 0 DELETE NONOVERLAPPING",
        "[51-51] 5 DATA OVERLAPPING"
    ]
}

Explanation of results:

• cumulative point: The version boundary between base and cumulative compaction. Versions before (excluding) points are handled by base compaction. Versions after (inclusive) are handled by cumulative compaction.
• last cumulative failure time: The time when the last cumulative compaction failed. After 10 minutes by default, cumulative compaction is attempted on the this tablet again.
• last base failure time: The time when the last base compaction failed. After 10 minutes by default, base compaction is attempted on the this tablet again.
• rowsets: The current rowsets collection of this tablet. [0-48] means a rowset with version 0-48. The second number is the number of segments in a rowset. The DELETE indicates the delete version. OVERLAPPING and NONOVERLAPPING indicates whether data between segments is overlap.

Examples

curl -X GET http://192.168.10.24:8040/api/compaction/show?tablet_id=10015\&schema_hash=1294206575

Manually trigger Compaction

(TODO)