The Migration Upgrade API performs the upgrade of internal indices to make them compatible with the next major version.
Request
POST /_xpack/migration/upgrade/<index_name>
Description
Indices must be upgraded one at a time.
Path Parameters
-
index_name - (string) Identifier for the index.
-
wait_for_completion -
(boolean) Defines whether the upgrade call blocks until the upgrade process is
finished. The default value is
true. If set tofalse, the upgrade can be performed asynchronously.
Examples
The following example submits a POST request to the
/_xpack/migration/upgrade/<index_name> endpoint:
POST /_xpack/migration/upgrade/.watches
A successful call returns the statistics about the upgrade process:
{
"took" : 127,
"timed_out" : false,
"total" : 4,
"updated" : 0,
"created" : 4,
"deleted" : 0,
"batches" : 1,
"version_conflicts" : 0,
"noops" : 0,
"retries" : {
"bulk" : 0,
"search" : 0
},
"throttled_millis" : 0,
"failures" : [ ]
}The following example upgrades a large index asynchronously by specifying the
wait_for_completion parameter:
POST /_xpack/migration/upgrade/.watches?wait_for_completion=false
This call should return the id of the upgrade process task:
{
"task" : "PFvgv7T6TGumRyFF3vqTFg:1137"
}The status of the running or finished upgrade requests can be obtained by using the Task API:
GET _tasks/PFvgv7T6TGumRyFF3vqTFg:1137?detailed=true
{
"completed" : true, 
"task" : {
"node" : "PFvgv7T6TGumRyFF3vqTFg",
"id" : 1137,
"type" : "transport",
"action" : "cluster:admin/xpack/upgrade",
"description" : "",
"start_time_in_millis" : 1500650625413,
"running_time_in_nanos" : 947456819,
"cancellable" : true
},
"response" : { 
"took" : 212,
"timed_out" : false,
"total" : 4,
"updated" : 0,
"created" : 4,
"deleted" : 0,
"batches" : 1,
"version_conflicts" : 0,
"noops" : 0,
"retries" : {
"bulk" : 0,
"search" : 0
},
"throttled_millis" : 0,
"failures" : [ ]
}
}
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