WARNING: Version 6.1 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
Upgrade API
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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.
Upgrade API
editThe _upgrade
API is no longer useful and will be removed. Instead, see
Reindex before upgrading.