WARNING: Version 2.3 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.

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Elastic Docs ›Elasticsearch Guide [2.3] ›Breaking changes ›Breaking changes in 2.1

Index APIs

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Index APIs

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Optimize API

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The Optimize API has been deprecated, all new optimize actions should use the new Force Merge API.

Queue size stats

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The value for the queue_size in nodes info/stats was sometimes shown as "1k" instead of 1000. These values are always shown as an integer now.

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