Querying Table Skew or Dirty Page Rate Information
Function
This API is used to query the skew or dirty page rate of a table.
Call Method
For details, see Calling APIs.
URI
GET /v1/{project_id}/clusters/{cluster_id}/dms/tables/statistic
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Project ID. For details about how to obtain the ID, see Obtaining Project ID. |
cluster_id |
Yes |
String |
Cluster ID. For details about how to obtain the ID, see Obtaining the Cluster ID. |
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
rate_type |
Yes |
String |
Type of information to be queried. This parameter is set to a fixed value.
|
offset |
Yes |
Integer |
Offset from which the query starts, which is greater or equal to 0. |
limit |
Yes |
Integer |
Number of records displayed per page. |
order_by |
No |
String |
Sorting field This parameter is set to a fixed value.
|
sort_by |
No |
String |
Ascending or descending. This parameter is set to a fixed value.
|
filter |
No |
String |
Query condition. This parameter is set to a fixed value.
|
value |
No |
String |
Value of a query condition. |
Request Parameters
None
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
collect_time |
Long |
Millisecond-level timestamp of the data collection time |
data |
Array of ListTablesStatisticDto objects |
List of table skew rates or dirty page rates |
count |
Integer |
Total list size |
Example Request
https://{Endpoint}/v1/{project_id}/clusters/{cluster_id}/dms/tables/statistic?rate_type=dirtyPage&filter=&value=&offset=0&limit=1&order_by=&sort_by=ASC
Example Response
Status code: 200
{ "collect_time" : 0, "data" : [ { "db_name" : "postgres", "schema_name" : "pmk", "table_name" : "pmk_snapshot_coordinator_stat", "table_owner" : "Ruby", "table_size" : "224 KB", "skew_rate" : null, "dirty_page_rate" : 0.77 } ], "count" : 3 }
SDK Sample Code
The sample code is as follows:
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package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.BasicCredentials; import com.huaweicloud.sdk.core.exception.ConnectionException; import com.huaweicloud.sdk.core.exception.RequestTimeoutException; import com.huaweicloud.sdk.core.exception.ServiceResponseException; import com.huaweicloud.sdk.dws.v2.region.DwsRegion; import com.huaweicloud.sdk.dws.v2.*; import com.huaweicloud.sdk.dws.v2.model.*; public class ListTablesStatisticSolution { public static void main(String[] args) { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK"); ICredential auth = new BasicCredentials() .withAk(ak) .withSk(sk); DwsClient client = DwsClient.newBuilder() .withCredential(auth) .withRegion(DwsRegion.valueOf("<YOUR REGION>")) .build(); ListTablesStatisticRequest request = new ListTablesStatisticRequest(); request.withRateType("<rate_type>"); request.withOffset(<offset>); request.withLimit(<limit>); request.withOrderBy("<order_by>"); request.withSortBy("<sort_by>"); request.withFilter("<filter>"); request.withValue("<value>"); try { ListTablesStatisticResponse response = client.listTablesStatistic(request); System.out.println(response.toString()); } catch (ConnectionException e) { e.printStackTrace(); } catch (RequestTimeoutException e) { e.printStackTrace(); } catch (ServiceResponseException e) { e.printStackTrace(); System.out.println(e.getHttpStatusCode()); System.out.println(e.getRequestId()); System.out.println(e.getErrorCode()); System.out.println(e.getErrorMsg()); } } } |
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# coding: utf-8 from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkdws.v2.region.dws_region import DwsRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkdws.v2 import * if __name__ == "__main__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak = os.getenv("CLOUD_SDK_AK") sk = os.getenv("CLOUD_SDK_SK") credentials = BasicCredentials(ak, sk) \ client = DwsClient.new_builder() \ .with_credentials(credentials) \ .with_region(DwsRegion.value_of("<YOUR REGION>")) \ .build() try: request = ListTablesStatisticRequest() request.rate_type = "<rate_type>" request.offset = <offset> request.limit = <limit> request.order_by = "<order_by>" request.sort_by = "<sort_by>" request.filter = "<filter>" request.value = "<value>" response = client.list_tables_statistic(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
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package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" dws "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2/region" ) func main() { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak := os.Getenv("CLOUD_SDK_AK") sk := os.Getenv("CLOUD_SDK_SK") auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). Build() client := dws.NewDwsClient( dws.DwsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.ListTablesStatisticRequest{} request.RateType = "<rate_type>" request.Offset = int32(<offset>) request.Limit = int32(<limit>) orderByRequest:= "<order_by>" request.OrderBy = &orderByRequest sortByRequest:= "<sort_by>" request.SortBy = &sortByRequest filterRequest:= "<filter>" request.Filter = &filterRequest valueRequest:= "<value>" request.Value = &valueRequest response, err := client.ListTablesStatistic(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
For more SDK sample codes of programming languages, visit API Explorer and click the Sample Code tab. Example codes can be automatically generated.
Status Code
Status Code |
Description |
---|---|
200 |
The table skew rate/dirty page rate is queried successfully. |
400 |
Request error. |
401 |
Authentication failed. |
403 |
You do not have required permissions. |
404 |
No resources found. |
500 |
Internal server error. |
503 |
Service unavailable. |
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