ListDoctorHBaseRegionServers - E-MapReduce - Alibaba Cloud Documentation Center

Obtains the information about multiple HBase RegionServers at a time.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
emr:ListDoctorHBaseRegionServers	list	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID.	cn-hangzhou
ClusterId	string	Yes	The cluster ID.	c-b933c5aac8fe****
NextToken	string	No	The pagination token that is used in the request to retrieve a new page of results.	DD6B1B2A-5837-5237-ABE4-FF0C89568980
MaxResults	integer	No	The maximum number of entries to return on each page.	20
DateTime	string	Yes	The query date.	2023-01-01
RegionServerHosts	array	No	The RegionServer hosts.
String	string	No	The RegionServer host.	emr-worker-4.cluster-20****
OrderType	string	No	The order in which you want to sort the query results. Valid value: ASC: in ascending order DESC: in descending order	ASC
OrderBy	string	No	The field that you use to sort the query results. Valid value: regionCount: the number of regions.	regionCount

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
Data	array<object>	The returned data.
ListDoctorHBaseRegionServersDTO	object
RegionServerHost	string	The RegionServer host.	emr-worker-4.cluster-20****
Metrics	object	The metric information.
RegionCount	object	The number of regions.
Name	string	The name of the metric.	regionCount
Value	long	The value of the metric.	81
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Number of regions count
TotalReadRequest	object	The cumulative number of read requests.
Name	string	The name of the metric.	totalReadRequest
Value	long	The value of the metric.	170500567
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Total number of read requests
TotalWriteRequest	object	The cumulative number of write requests.
Name	string	The name of the metric.	totalWriteRequest
Value	long	The value of the metric.	30109837
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Total number of write requests
TotalRequest	object	The cumulative number of all requests.
Name	string	The name of the metric.	totalRequest
Value	long	The value of the metric.	89499511
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Total number of requests
DailyReadRequest	object	The number of daily read requests.
Name	string	The name of the metric.	dailyReadRequest
Value	long	The value of the metric.	42571
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Number of read requests per day
DailyWriteRequest	object	The number of daily write requests.
Name	string	The name of the metric.	dailyWriteRequest
Value	long	The value of the metric.	23124
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Number of write requests per day
AvgGc	object	The average garbage collection (GC) duration.
Name	string	The name of the metric.	avgGc
Value	float	The value of the metric.	37.9
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	The efficiency of garbage collection in the system
CacheRatio	object	The cache hit ratio.
Name	string	The name of the metric.	cacheRatio
Value	float	The value of the metric.	96.7
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	Ratio of the BlockCache memory size
DailyReadRequestDayGrowthRatio	object	The growth rate of the number of daily read requests.
Name	string	The name of the metric.	dailyReadRequestDayGrowthRatio
Value	float	The value of the metric.	1.0
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	The growth rate of daily read request quantity.
DailyWriteRequestDayGrowthRatio	object	The growth rate of the number of daily write requests.
Name	string	The name of the metric.	dailyWriteRequestDayGrowthRatio
Value	float	The value of the metric.	1.0
Unit	string	The unit of the metric.	""
Description	string	The description of the metric.	The growth rate of daily write request quantity.
RequestId	string	The request ID.	DD6B1B2A-5837-5237-ABE4-FF0C8944****
NextToken	string	A pagination token.	DD6B1B2A-5837-5237-ABE4-FF0C89568980
MaxResults	integer	The maximum number of entries that are returned.	20
TotalCount	integer	The total number of entries returned.	200

Examples

Sample success responses

JSONformat

{
  "Data": [
    {
      "RegionServerHost": "emr-worker-4.cluster-20****",
      "Metrics": {
        "RegionCount": {
          "Name": "regionCount",
          "Value": 81,
          "Unit": "\"\"",
          "Description": "Number of regions count"
        },
        "TotalReadRequest": {
          "Name": "totalReadRequest",
          "Value": 170500567,
          "Unit": "\"\"",
          "Description": "Total number of read requests"
        },
        "TotalWriteRequest": {
          "Name": "totalWriteRequest",
          "Value": 30109837,
          "Unit": "\"\"",
          "Description": "Total number of write requests"
        },
        "TotalRequest": {
          "Name": "totalRequest",
          "Value": 89499511,
          "Unit": "\"\"",
          "Description": "Total number of requests"
        },
        "DailyReadRequest": {
          "Name": "dailyReadRequest",
          "Value": 42571,
          "Unit": "\"\"",
          "Description": "Number of read requests per day"
        },
        "DailyWriteRequest": {
          "Name": "dailyWriteRequest",
          "Value": 23124,
          "Unit": "\"\"",
          "Description": "Number of write requests per day"
        },
        "AvgGc": {
          "Name": "avgGc",
          "Value": 37.9,
          "Unit": "\"\"",
          "Description": "The efficiency of garbage collection in the system"
        },
        "CacheRatio": {
          "Name": "cacheRatio",
          "Value": 96.7,
          "Unit": "\"\"",
          "Description": "Ratio of the BlockCache memory size"
        },
        "DailyReadRequestDayGrowthRatio": {
          "Name": "dailyReadRequestDayGrowthRatio",
          "Value": 1,
          "Unit": "\"\"",
          "Description": "The growth rate of daily read request quantity."
        },
        "DailyWriteRequestDayGrowthRatio": {
          "Name": "dailyWriteRequestDayGrowthRatio",
          "Value": 1,
          "Unit": "\"\"",
          "Description": "The growth rate of daily write request quantity."
        }
      }
    }
  ],
  "RequestId": "DD6B1B2A-5837-5237-ABE4-FF0C8944****",
  "NextToken": "DD6B1B2A-5837-5237-ABE4-FF0C89568980",
  "MaxResults": 20,
  "TotalCount": 200
}

Error codes

HTTP status code	Error code	Error message
400	ConflictParameters	Parameters that must not be used together. %s
400	IncompleteSignature	The request signature is invalid.
400	InvalidAction	The action %s requested is invalid.
400	InvalidParameter	The specified parameter %s is not valid.
400	InvalidParameterValue	The input parameter %s is invalid or out of range.
400	MissingAction	The action %s requested is missing.
400	MissingParameter	The input parameter %s that is mandatory for processing this request is not supplied.
400	NotAuthorized	You do not have permission to perform this action. %s
400	ThrottlingException	The request was denied due to request throttling. %s
404	ResourceNotFound	The resource not found by %s.
500	InternalError	The request processing has failed due to some unknown error, exception or failure.
503	ServiceFailure	The request has failed due to a temporary failure of %s service.
503	ServiceUnavailable	The request has failed due to a temporary failure of the server.

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation

No change history