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The Migration Upgrade API performs the upgrade of internal indices to make them compatible with the next major version.
POST /_xpack/migration/upgrade/<index_name>
Indices must be upgraded one at a time.
-
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.
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" : [ ]
}
}