Splits a specified shard that is in the readwrite state.

Description

Host consists of a project name and a Log Service endpoint. You must specify a project in Host.

Request headers

This operation uses only common request headers. For more information, see Common request headers.

Request syntax

POST /logstores/{logstore}/shards/{shard}?action=split HTTP/1.1

Request parameters

Parameter Type Position Required Example Description
logstore String Path Yes logstorename

The name of the Logstore.

key String Query No ef000000000000000000000000000000

The position from which the shard is split.

shardCount Integer Query No 2

The number of new shards that are generated after splitting.

Response parameters

Parameter Type Example Description
Server String nginx

The name of the server.

Content-Type String application/json

The type of the response body. Valid values: application/json and application/x-protobuf.

Content-Length String 20

The length of the response body.

Connection String close

Indicates whether the connection is persistent. Valid values:

  • close: The connection is non-persistent. A new TCP connection is established for each HTTP request.
  • keep-alive: The connection is persistent. After a TCP connection is established, the connection remains open, and no more time or bandwidth is consumed to establish new connections.
Date String Sun, 27 May 2018 08:25:04 GMT

The time at which the response was returned.

x-log-requestid String 5B0A6B60BB6EE39764D458B5

The ID of the request.

Array of shard

An array that consists of shards. For example, if the shardCount parameter is set to 2, an array that consists of three shards is returned. The first shard is the original shard, and the last two shards are the new shards.

Examples

Sample requests

POST /logstores/logstorename/shards/0?action=split&key=ef000000000000000000000000000000&shardCount=2 HTTP/1.1
Host:ali-test-project.cn-hangzhou.log.aliyuncs.com
Content-Type:application/json

Sample success responses

JSON format 

HTTP/1.1 200 OK
Content-Type:application/json

{
  "shardID" : 33,
  "status" : "readonly",
  "inclusiveBeginKey" : "ee000000000000000000000000000000",
  "exclusiveEndKey" : "ffffffffffffffffffffffffffffffff",
  "createTime" : 1453949705
}

Error codes

For a list of error codes, visit the API Error Center.

HTTP status code

Error code

Error message

Description

404

ProjectNotExist

Project does not exist.

The error message returned because the specified project does not exist.

404

LogStoreNotExist

Logstore does not exist.

The error message returned because the specified Logstore does not exist.

400

ParameterInvalid

invalid shard id.

The error message returned because the specified shard ID is invalid.

400

ParameterInvalid

invalid mid hash.

The error message returned because the specified key parameter is invalid.

400

LogStoreWithoutShard

logstore has no shard.

The error message returned because no shards exist in the specified Logstore.

500

InternalServerError

Specified Server Error Message.

The error message returned because an internal server error has occurred.

For more information, see Common error codes.