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1. shardBackupId - (Required) The shard backup ID assigned by the Backup Collection API for the current backup.
2. prevShardBackupId - The previous shard backup ID against which the incremental backup is to be made. The previous shard backup is used as the base to find changed data.

admin/cores?action=BACKUPCORE&
  core=core-node1&
  location=/path/to/my/shared/drive/myBackupName&
  prevShardBackupId=md_shard1_id_0
  shardBackupId=md_shard1_id_1

Restore Core API

This is also an internal API to be called by the Restore Collection API. It supports two new parameters:

POST /v2/cores/someCoreName

{
  "backup-core": {
    "location": "/path/to/my/shared/drive/with/backupName",
    "shardBackupId": "md_shard1_id_1",
    "prevShardBackupId": "md_shard1_id_0"
  }
}

Restore Core API

This is also an internal API to be called by the Restore Collection API. It supports two new parameters:

1. incremental – An optional boolean that signals whether the data being restored is in the "incremental" format incremental – An optional boolean that signals whether the data being restored is in the "incremental" format or not. Defaults to false.
2. shardBackupId - The shard backup ID to be restored. This is a required parameter if incremental=true is specified.

admin/cores?action=RESTORECORE&
  core=core-node1&
  incremental=true&
  location=/path/to/my/shared/drive/myBackupName&
  shardBackupId=md_shard1_id_1

POST /v2/cores/someRestoreCoreName

{
  "restore-core": {
    "incremental": true,
    "location": "

admin/cores?action=RESTORECORE&
  core=core-node1&
  incremental=true&
  location=/path/to/my/shared/drive/myBackupName&with/backupName",
  shardBackupId=  "shardBackupId": "md_shard1_id_1"
  }
}

Compatibility, Deprecation, and Migration Plan

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