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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

  1. 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:

  1. {
  2.     "status": "Fail",
  3.     "msg": "Tablet not found"
  4. }

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

  1. {
  2.     "cumulative point": 50,
  3.     "last cumulative failure time": "2019-12-16 18:13:43.224",
  4.     "last base failure time": "2019-12-16 18:13:23.320",
  5.     "last cumu success time": "2019-12-16 18:12:15.110",
  6.     "last base success time": "2019-12-16 18:11:50.780",
  7.     "rowsets": [
  8.         "[0-48] 10 DATA OVERLAPPING",
  9.         "[49-49] 2 DATA OVERLAPPING",
  10.         "[50-50] 0 DELETE NONOVERLAPPING",
  11.         "[51-51] 5 DATE OVERLAPPING"
  12.     ]
  13. }

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

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

Manually trigger Compaction

(TODO)