REST API

The Rest APIs are designed for jobs, configurations, and cluster management.

Distributed Load

Pre-loads UFS (Underlying File System) data into worker caches to prevent performance degradation caused by cold reads.

Submit or resume a load job

Method	Path	Parameters	Request Body Type
POST	/api/v1/load	None	Content-Type: application/json

Parameters

Name	Type	Required	Description	Example
index	string	No	Path to the index file on UFS (must be mounted)	'{"index": "s3://bucket/key"}'
paths	string	No	List of UFS paths to load	'{"paths": ["s3://bucket/key1", "s3://bucket/key2"]}'
alias	string	No	Used in combination with paths for subsequent status queries	'{"paths": ["s3://bucket/key1"], "alias": "database1"}'
`options	object	No	Configuration options for the load job	'{"index": "s3://bucket/key", "options":{"batchSize":10}}'

Note: You must choose either index or paths. If paths is used, an alias can be specified; otherwise, a random alias will be generated and returned.

An options JSON can be used to configure the options of the load job. All options are optional. Possible configs are:

Name	Type	Required	Description
batchSize	int	No	Batch size for workers to load data from UFS
replicas	int	No	Number of file replicas to load. Defaults to the path-specific config or 1
skipIfExists	bool	No	Skip the loading process if the file already exists
loadPolicy	enum	No	Currently supports IF_CHANGED. Updates the file if it has changed
loadMetadataOnly	bool	No	Only load file metadata

Example

JSON request payload:

{
  "paths": [
    "s3://my-bucket/dir/to/path"
  ],
  "options": {
    "batchSize": 1,
    "replicas": 1,
    "loadMetadataOnly": true,
    "loadPolicy": "IF_CHANGED"
  }
}

Success Response (JSON):

{
  "target":"job-95e8a01f-d519-4c1a-8311-26714f4db623",
  "id":"1cf35e69-b6e6-4807-8aae-588e0e994277"
}

Error Codes

HTTP Code	Error Code	Description
200	OK	Operation successful
400	Bad Request	Request body missing or required fields missing
409	Conflict	An identical job is already scheduled; submission rejected
500	Internal Server Error	Unexpected error

Get Load Job Progress

Method	Path	Params	Request Body Type
GET	/api/v1/load	Yes	None

Parameters:

Name	Type	Required	Description	Example
target	string	Yes	Field information returned when submitting the job	target=job-95e8a01f-d519-4c1a-8311-26714f4db623
fileList	bool	No	Retrieve the list of loaded files	target=job-95e8a01f-d519-4c1a-8311-26714f4db623&fileList=true
fileStatus	string	No	File list type [TOTAL|FAILURE]	target=job-95e8a01f-d519-4c1a-8311-26714f4db623&fileList=true&fileStatus=TOTAL

Note: 3.7 query parameters remain compatible, eg:alias,index

Examples:

Response for job execution status:

{
    "id": "043cc6c2-b456-4d57-a807-a8c86256d8f2",
    "startTime": "2026-01-16T16:35:35.32+08:00",
    "endTime": "2026-01-16T16:35:42.149+08:00",
    "jobState": "SUCCEEDED",
    "timeElapsedMilliseconds": 6829,
    "paths": [
        "s3://test/index"
    ],
    "alias": "job-e7cc61f3-fdd5-45fe-a11b-e8f92f0c6d05",
    "batchSize": 200,
    "loadedBytes": 127,
    "totalBytes": 127,
    "loadedNonEmptyFiles": 1,
    "scannedFiles": 1,
    "replicas": "ALL"
}

Response for file list:

[
    {
        "path": "s3://test/index",
        "size": 0,
        "mTime": 0
    },
    {
        "path": "s3://test/index-copy",
        "size": 0,
        "mTime": 0
    }
]

Error Codes

HTTP Code	Error Code	Description
200	OK	Operation successful
404	Not Found	Job does not exist
500	Internal Server Error	Unexpected error

Stop a load job

Method	Path	Parameters	Request Body Type
DELETE	/api/v1/load	None	Content-Type: application/json

Parameters

Name	Type	Required	Description	Example
target	string	Yes	Target ID returned at job submission	{"target":"job-95e8a01f-d519-4c1a-8311-26714f4db623"}

Note: Stop parameters remain compatible with version 3.7, eg:alias,index

Error Codes

HTTP Status	Error Code	Description
200	OK	Operation successful
400	Bad Request	No request body or missing required fields
404	Not Found	Load job does not exist
410	Gone	Load job has already completed

List all load jobs

Method	Path	Parameters	Request Body Type
GET	/api/v1/load	yes	None

Parameters:

Name	Type	Required	Description
state	enum	No	Job status [RUNNING
lastKey	string	No	List jobs starting from this key
count	int	No	Expected number of jobs to list

Note: If no parameters are provided, all jobs will be listed.

Error Codes

HTTP Status	Error Code	Description
200	OK	Operation successful

Responses Example response for listing jobs (JSON):

{
    "results": [
        {
            "id": "53b3123d-a042-4eb1-90e5-73798b963b04",
            "startTime": "2026-01-17T08:22:52.787+08:00",
            "endTime": "2026-01-17T08:22:57.289+08:00",
            "jobState": "SUCCEEDED",
            "timeElapsedMilliseconds": 4502,
            "paths": [
                "s3://tidas-alluxio-test/index"
            ],
            "alias": "job-1cfb048e-7ca7-48d3-8dd3-aa2ed8472176",
            "batchSize": 200,
            "loadedBytes": 127,
            "totalBytes": 127,
            "loadedNonEmptyFiles": 1,
            "scannedFiles": 1,
            "replicas": "ALL"
        },
        {
            "id": "89e288cf-480a-40df-a45b-91c3e08cb138",
            "startTime": "2026-01-17T08:22:54.117+08:00",
            "endTime": "1970-01-01T08:00:00+08:00",
            "jobState": "RUNNING",
            "runningStage": "LOADING",
            "paths": [
                "s3://tidas-alluxio-test/index"
            ],
            "alias": "job-9869111f-99f3-4ee4-9dbe-6c0204b96aec",
            "batchSize": 200,
            "replicas": "ALL"
        }
    ]
}

Free Cache

Clean up worker cache data to release storage space.

Submit or resume a free job

Method	Path	Parameters	Request Body Type
POST	/api/v1/free	None	Content-Type: application/json

Parameters

Name	Type	Required	Description	Example
index	string	No	Index file path on UFS (must be mounted)	'{"index": "s3://bucket/key"}'
paths	string	No	List of UFS paths to be freed	'{"paths": ["s3://bucket/key1", "s3://bucket/key2"]}'
alias	string	No	Used with paths for status queries	'{"paths": ["s3://bucket/key1", "s3://bucket/key2"], "alias": "database1"}'
options	object	No	Configuration options for the free job	'{"index": s3://bucket/key, "options":{"batchSize":10}}'

Note: Either index or paths must be provided. If paths is used, an alias can be specified; otherwise, an internal random alias will be generated.

At most one of the parameters is required. Paths and alias must be provided together.

An options JSON can be used to configure the options of the free job. All options are optional. Possible configs are:

Name	Type	Required	Description
batchSize	int	No	Speed at which the worker frees cache files per second
replicas	int	No	Number of file replicas to free
indexService	bool	No	Free directory cache

Example

An example JSON request payload looks like the following:

{
    "paths": [
        "s3://tidas-alluxio-test/index",
        "s3://tidas-alluxio-test/index-copy"
    ],
    "options": {
        "batchSize": "30"
    }
}

Successful Response (JSON):

{
    "target": "job-0aafec67-53b4-488c-b988-73493b2b9ebe",
    "id": "bc0c3296-ea1f-484b-b371-300bf4d54ca6"
}

Get Free Job Progress

Method	Path	Parameters	Request Body Type
GET	/api/v1/free	Yes	None

Parameters:

Name	Type	Required	Description	Example
target	string	Yes	The field returned when submitting the job	target=job-95e8a01f...

Note: 3.7 query parameters remain compatible, eg:alias,index

Example

Successful response for job status (JSON): Responses:

{
    "id": "17bb4213-891b-4c3f-bc32-8d314051514b",
    "startTime": "2026-01-17T21:59:11.831+08:00",
    "endTime": "2026-01-17T21:59:16.104+08:00",
    "jobState": "SUCCEEDED",
    "timeElapsedMilliseconds": 4273,
    "paths": ["s3://test/"],
    "alias": "job-95adb50b-4722-4a79-bd58-872cfeca48cb",
    "freedBytes": 409600,
    "totalBytes": 409600,
    "freedFiles": 100,
    "totalFiles": 100
}

Error Codes

HTTP Status	Error Code	Description
200	OK	Operation successful
404	Not Found	Load job does not exist

Stop a free job

Method	Path	Parameters	Request Body Type
DELETE	/api/v1/free	None	Content-Type: application/json

Parameters

Name	Type	Required	Description	Example
target	string	Yes	The field returned when submitting the job	{"target":"job-95e8a01f-d519-4c1a-8311-26714f4db623"}

Note: Stop parameters remain compatible with version 3.7, eg:alias,index

Error Codes

HTTP Status	Error Code	Description
200	OK	Operation successful
400	Bad Request	No request body or missing required fields
404	Not Found	Job does not exist
410	Gone	Job has already completed

List all free jobs

Method	Path	Parameters	Request Body Type
GET	/api/v1/free	yes	None

Parameters:

Name	Type	Required	Description
state	enum	No	Job status [RUNNING
lastKey	string	No	List jobs starting from this key
count	int	No	Expected number of jobs to list

Note: If no parameters are provided, all jobs will be listed.

Error Codes

HTTP Status	Error Code	Description
200	OK	Operation successful

Response Example response for listing jobs (JSON):

{
    "results": [
        {
            "id": "1498117f-bf66-4198-967d-1186588c56d1",
            "startTime": "2026-01-17T22:13:35.198+08:00",
            "endTime": "2026-01-17T22:13:40.385+08:00",
            "jobState": "SUCCEEDED",
            "timeElapsedMilliseconds": 5187,
            "paths": ["s3://test/rest1/test/"],
            "alias": "job-312c44ac-156c-4e5a-b142-e540067ad086"
        },
        {
            "id": "3baf5ab6-c303-4a59-8678-f297870847f4",
            "startTime": "2026-01-17T22:13:26.177+08:00",
            "endTime": "2026-01-17T22:13:30.38+08:00",
            "jobState": "SUCCEEDED",
            "timeElapsedMilliseconds": 4203,
            "paths": ["s3://test/rest/test/"],
            "alias": "job-749f2cbf-32cb-44d5-aa4f-4a4e6b94689b"
        }
    ]
}

Rebalance

List all rebalance jobs

Method: GET

Path: /api/v1/rebalance

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "results": [
      {...}
    ]
  }

  for more information on the job description, please refer to the “Get the progress of a rebalance job”

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Get the progress of a rebalance job

Method: GET

Path: /api/v1/rebalance

Parameters:

At most one of the parameters is required.

Name	Description
id	job id returned by POST
target	the target workers of the rebalance job, can bea worker id (e.g. worker-54b88939-de49-46ef-acab-fe489f46d1a0)ALL (for all workers)

Responses:

• 200 - OK: successful operation(empty value will be omitted)

  {
     "succeededWorkers":2,
     "bytesPreserved":4,
     "filesLoaded":0,
     "filesPreserved":1,
     "filesFailed":0,
     "totalWorkers":2,
     "bytesPruned":226,
     "filesPruned":5,
     "bytesLoaded":0,
     "timeElapsedMilliseconds":4536,
     "runningWorkers":0,
     "startTime":"2024-12-19T23:15:07.043+08:00",
     "id":"8de63d3a-63c8-4f08-bbc1-c87e3c0fb6d9",
     "state":"SUCCEEDED",
     "failedWorkers":0
  }

• 404 - Not Found: no job found

  {
    "status": "No job found..."
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Submit or resume a rebalance job

Method: POST

Path: /api/v1/rebalance

Parameters: none

Request body: Content-Type: application/json

Required field

Name	Description
target	The target workers of the rebalance job, can be either a worker id (e.g. worker-54b88939-de49-46ef-acab-fe489f46d1a0) or ALL (for all workers)

An options JSON can be used to configure the options of the load job. All options are optional. Possible configs are:

Name	Description
loadBatchSize	the batch size in the loading phase, the same as the batchSize option in the load job
loadBandwidth	The load bandwidth of each worker per second in bytes. e.g.: 10485746000...
pruneBandwidth	The prune bandwidth of each worker per second in bytes. e.g.: 10485746000...
skipPrune	If rebalance should only load data and skip pruning the data that does not blong to the worker(s)

An example JSON request payload looks like the following:

{
  "target": "ALL",
  "options": {
    "loadBatchSize": 1000,
    "loadBandwidth": 10485746000,
    "pruneBandwidth": 10485746000,
    "skipPrune": false,
  }
}

Responses:

• 200 - OK: successful operation

  {
    "id": "54b88939-de49-46ef-acab-fe489f46d1a0"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 409 - Conflict: resume the load job with the same path and return the previous job id

  {
    "id": "54b88939-de49-46ef-acab-fe489f46d1a0"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Stop a rebalance job

Method: DELETE

Path: /api/v1/rebalance

Parameters: none

Request body: Content-Type: application/json

At most one of the parameters is required.

Name	Description
id	job id returned by POST
target	the target workers of the rebalance job, can be either a worker id (e.g. worker-54b88939-de49-46ef-acab-fe489f46d1a0) or ALL (for all workers)

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 410 - Gone: the job doesn’t exist or has already finished

  {
    "status": "The job doesn't exist or has already finished"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Clear Stale Cache

This operation differs from the Free Cache operation in that:

1. The free job requires a list of files or directories as input arguments to specify what to free from the workers. The Clear Stale Cache operation does not require such input because what counts as “stale cache” is determined automatically by scanning the worker cache storage and consulting the current consistent hash ring.

2. The free job requires setting the correct number of replicas, otherwise it may free fewer replicas than expected, if file replication is enabled. The clear stale cache operation simply broadcasts to all the workers in the cluster, so it always triggers the clearing of stale cache on all workers, regardless of how many replicas there are.

Start clearing stale cache

Method: POST

Path: /api/v1/cache

Parameters: none

Request body: Content-Type: application/json

{
  "op": "clear-stale"
}

Responses:

• 200 - OK: an empty errors object indicates that the operation has been successfully submitted to all workers for execution

  {
    "errors": {}
  }

• 200 - OK: non-empty errors object indicates that the operation fails to be submitted to at least one of the workers for execution

  {
    "errors": {
      "worker-host": "error message"
    }
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

• 501 - Not Implemented: the specified operation type is not implemented

  {
    "status": "OP not implemented"
  }

Stop clearing stale cache

Method: DELETE

Path: /api/v1/cache

Parameters: none

Request body: Content-Type: application/json

{
  "op": "clear-stale"
}

Responses:

• 200 - OK: an empty errors object indicates that all workers have been successfully notified to stop clearing stale cache

  {
    "errors": {}
  }

• 200 - OK: non-empty errors object indicates that the coordinator fails to notify at least one of the workers to stop clearing stale cache

  {
    "errors": {
      "worker-host": "error message"
    }
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

• 501 - Not Implemented: the specified operation type is not implemented

  {
    "status": "OP not implemented"
  }

Mount Table

List mount points

Method: GET

Path: /api/v1/mount

Parameters: none

Responses:

• 200 - OK: successful operation(options will be omitted if empty)

  {
    "results": [
      {
        "path": "/data/",
        "ufs": "s3://my-bucket/",
        "options": {
          "s3a.secretKey": "string",
          "s3a.accessKeyId": "string"
        }
      }
    ]
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Get mount point information

Method: GET

Path: /api/v1/mount

Parameters:

Name	Description
path	Alluxio or UFS path of the mount point

Responses:

• 200 - OK: successful operation(options will be omitted if empty)

  {
    "path": "/data/",
    "ufs": "s3://my-bucket/",
    "options": {
      "s3a.secretKey": "string",
      "s3a.accessKeyId": "string"
    }
  }

• 404 - Not Found: mount point not found

  {
    "status": "No mount point found for path: /data/"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Create a mount point

Method: POST

Path: /api/v1/mount

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data",
  "ufs": "s3://my-bucket",
  "options": {
    "s3a.secretKey": "string",
    "s3a.accessKeyId": "string"
  }
}

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 409 - Conflict: the path is already mounted, or the UFS has been mounted to another path

  {
    "status": "string"
  }

• 501 - Not Implemented: the mount table doesn’t support managing via an API (e.g.: static file mount table)

  {
    "status": "string"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Delete a mount point

Method: DELETE

Path: /api/v1/mount

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data"
}

Note that the path can be either a UFS path or an Alluxio path.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 410 - Gone: the path isn’t mounted to any UFS

  {
    "status": "string"
  }

• 501 - Not Implemented: the mount table doesn’t support managing via an API (e.g.: static file mount table)

  {
    "status": "string"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Quota

List all quota status

Method: GET

Path: /api/v1/quota

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "results": [
      {
        "path": "/data/dir/to/path",
        "state": "Available",
        "quotaBytes": 10737418240,
        "usedBytes": 9663676416,
        "reservedBytes": 1073741824
      }
    ]
  }

  Note that the returned paths are Alluxio paths.

• 501 - Not Implemented: quota is not enabled

  {
    "status": "Quota not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Get quota status

Method: GET

Path: /api/v1/quota

Parameters:

Name	Description
path	Alluxio or UFS path of the quota rule

Responses:

• 200 - OK: successful operation

  {
    "path": "/data/dir/to/path",
    "state": "Available",
    "quotaBytes": 10737418240,
    "usedBytes": 9663676416,
    "reservedBytes": 1073741824
  }

  Note that the returned paths are Alluxio paths.

• 404 - Not Found: quota not found

  {
    "status": "No quota item found for path: /data/dir/to/path"
  }

• 501 - Not Implemented: quota is not enabled

  {
    "status": "Quota not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Add or update quota

Method: POST

Path: /api/v1/quota

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path",
  "quotaBytes": 10737418240
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 400 - Bad Request: the path doesn’t refer to a mounted UFS but it must be bound with an existing UFS

  {
    "status": "No mounted UFS found"
  }

• 501 - Not Implemented: quota is not enabled

  {
    "status": "Quota not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Delete quota

Method: DELETE

Path: /api/v1/quota

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path"
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 400 - Bad Request: quota not found or other problems

  {
    "status": "string"
  }

• 501 - Not Implemented: quota is not enabled

  {
    "status": "Quota not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

TTL

List all TTL policies

Method: GET

Path: /api/v1/ttl

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "results": [
      {
        "path": "/data/dir/to/path",
        "ttlSeconds": 600
      }
    ]
  }

  Note that the returned path is an Alluxio path.

• 501 - Not Implemented: TTL policy is not enabled

  {
    "status": "TTL not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Get TTL policy

Method: GET

Path: /api/v1/ttl

Parameters:

Name	Description
path	Alluxio or UFS path of the TTL policy to look up

Responses:

• 200 - OK: successful operation

  {
    "path": "/data/dir/to/path",
    "ttlSeconds": 600
  }

  Note that the returned path is an Alluxio path.

• 404 - Not Found: TTL not found

  {
    "status": "No TTL policy found for path: /data/dir/to/path"
  }

• 501 - Not Implemented: TTL policy is not enabled

  {
    "status": "TTL not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Add or update TTL

Method: POST

Path: /api/v1/ttl

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path",
  "ttlSeconds": 600
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 400 - Bad Request: the path doesn’t refer to a mounted UFS but it must be bound with an existing UFS

  {
    "status": "No mounted UFS found"
  }

• 501 - Not Implemented: TTL policy is not enabled

  {
    "status": "TTL not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Delete TTL

Method: DELETE

Path: /api/v1/ttl

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path"
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 400 - Bad Request: TTL not found

  {
    "status": "string"
  }

• 501 - Not Implemented: TTL is not enabled

  {
    "status": "TTL not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Priority Eviction

List all priority eviction policies

Method: GET

Path: /api/v1/priority

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "results": [
      {
        "path": "/data/dir/to/path",
        "priority": "high"
      }
    ]
  }

Note that the returned paths are Alluxio paths.

• 501 - Not Implemented: Priority eviction is not enabled

  {
    "status": "Priority eviction not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Get priority eviction policy

Method: GET

Path: /api/v1/priority

Parameters:

Name	Description
path	Alluxio or UFS path of the priority rule to look up

Responses:

• 200 - OK: successful operation

  {
    "path": "/data/dir/to/path",
    "priority": "high"
  }

  Note that the returned path is an Alluxio path.

• 404 - Not Found: priority eviction not found

  {
    "status": "No priority rule found for path: /data/dir/to/path"
  }

• 501 - Not Implemented: priority eviction is not enabled

  {
    "status": "Priority eviction not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Add or update priority

Method: POST

Path: /api/v1/priority

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path",
  "priority": "high"
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 400 - Bad Request: priority string misformatted or other problems

  {
    "status": "string"
  }

• 501 - Not Implemented: priority eviction is not enabled

  {
    "status": "Priority eviction not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Delete priority

Method: DELETE

Path: /api/v1/priority

Parameters: none

Request body: Content-Type: application/json

{
  "path": "/data/dir/to/path"
}

Note that the path can be either a UFS path or an Alluxio path. The path must have been mounted in Alluxio's mount table.

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 501 - Not Implemented: priority eviction is not enabled

  {
    "status": "Priority eviction not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Node management

List all nodes

Method: GET

Path: /api/v1/nodes

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "result": [
      {
        "identity": "worker-587899dd-5da5-45d4-af40-ce481acc4087",
        "address": "192.168.1.19:29989",
        "status": "ONLINE"
      },
      {
        "identity": "worker-844db66c-d7fd-46cc-8de0-2f3989360828",
        "address": "192.168.1.19:29999",
        "status": "OFFLINE"
      }
    ]
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Query a node

Method: GET

Path: /api/v1/nodes

Parameters:

Name	Description
id	worker id (e.g. worker-587899dd-5da5-45d4-af40-ce481acc4087)

Responses:

• 200 - OK: successful operation (empty value will be omitted)

  {
    "identity": "worker-587899dd-5da5-45d4-af40-ce481acc4087",
    "address": "192.168.1.19:29989",
    "status": "ONLINE"
  }

• 404 - Not Found: worker not found

  {
    "status": "worker not found..."
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Decommission a node (remove a node from etcd)

Method: DELETE

Path: /api/v1/nodes

Parameters:

Name	Description
id	worker id (e.g. worker-587899dd-5da5-45d4-af40-ce481acc4087)

Responses:

• 200 - OK: successful operation

  {
    "status": "ok"
  }

• 404 - Not Found: worker not found

  {
    "status": "worker not found..."
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Global File Index

List all nodes

Method: GET

Path: /api/v1/file_index

Parameters: none

Responses:

• 200 - OK: successful operation

  {
    "results": [
      "file:///home/yimin/alluxio/ufs/10MB",
      "file:///home/yimin/alluxio/ufs/to_load/f1"
    ]
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Add files into the global file index

Method: POST

Path: /api/v1/file_index

Parameters: none

Request body: Content-Type: application/json

{
  "files": [
    "s3://foo/bar/f1",
    "s3://foo/bar/f2"
  ]
}

Responses:

• 200 - OK: successful operation (# of entries added)

  {
    "entries": 10
  }

• 404 - Not Found: feature not enabled

  {
    "status": "Global file index is not enabled"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Remove files from the global file index

Method: DELETE

Path: /api/v1/file_index

Parameters: none

Request body: Content-Type: application/json

{
  "files": [
    "s3://foo/bar/f1",
    "s3://foo/bar/f2"
  ]
}

Responses:

• 200 - OK: successful operation (# of entries removed)

  {
    "entries": 10
  }

• 404 - Not Found: feature not enabled

  {
    "status": "worker not found..."
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

Cache Filter

List all cache filter rules

Method: GET

Path: /api/v1/cache-filter

Parameters: none

Responses:

• 200 - OK: successful operation

{
  "results": [
    {
      "apiVersion": 1,
      "type": "metadata",
      "rules": {
        "defaultType": "immutable",
        "defaultMaxAge": null,
        "skipCache": ["s3://bucket/mutable-dir/.*"],
        "immutable": ["s3://bucket/immutable-dir/.*"],
        "maxAge": {"s3://bucket/auto-refresh/.*":  "1d"}
      }
    },
    {
      "apiVersion": 1,
      "type": "data",
      "rules": {
        "defaultType": "immutable",
        "defaultMaxAge": null,
        "skipCache": [],
        "immutable": [],
        "maxAge": {}
      }
    }
  ]
}

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

• 501 - Not Implemented: cache filter is not enabled

  {
    "status": "Cache filter not enabled"
  }

Add a cache filter rule or update the default rule

Method: POST

Path: /api/v1/cache-filter

Parameters: none

Request body: Content-Type: application/json

{
  "type": "data",
  "rule": "skipCache",
  "pattern": "s3a://data-bucket/c/.*"
}

If the rule is maxAge, a time is required.

{
  "type": "data",
  "rule": "maxAge",
  "pattern": "s3a://auto-refresh/c/.*",
  "time": "1d"
}

If you want to update the default rule, set updateDefault. No need to specify a pattern because all paths that don't match any other rules will be captured by the default rule.

{
  "type": "metadata",
  "rule": "skipCache",
  "updateDefault": true
}

Responses:

• 200 - OK: successful operation

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

• 501 - Not Implemented: cache filter is not enabled

  {
    "status": "Cache filter not enabled"
  }

Remove a cache filter rule

Method: DELETE

Path: /api/v1/cache-filter

Parameters: none

Request body: Content-Type: application/json

{
  "type": "data",
  "rule": "skipCache",
  "pattern": "s3a://data-bucket/c/.*"
}

No need to specify time if the rule is maxAge. Also, you can't remove a default rule. You can only change the default to another rule.

Responses:

• 200 - OK: successful operation

• 400 - Bad Request: the request doesn’t have a body or the required fields are missing

  {
    "status": "Required parameters not provided"
  }

• 500 - Internal Server Error: unexpected error

  {
    "status": "string"
  }

• 501 - Not Implemented: cache filter is not enabled

  {
    "status": "Cache filter not enabled"
  }