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[role="xpack"]
[[upgrade-assistant-api]]
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== Upgrade assistant APIs
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Check the upgrade status of your {es} cluster and reindex indices that were created in the previous major version. The assistant helps you prepare for the next major version of {es}.
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The following upgrade assistant APIs are available:
* <<upgrade-assistant-api-status, Upgrade readiness status API>> to check the status of your cluster
* <<start-resume-reindex, Start or resume reindex API>> to start a new reindex or resume a paused reindex
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* <<batch-start-resume-reindex, Batch start or resume reindex API>> to start or resume multiple reindex tasks
* <<batch-reindex-queue, Batch reindex queue API>> to check the current reindex batch queue
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* <<check-reindex-status, Check reindex status API>> to check the status of the reindex operation
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* <<cancel-reindex, Cancel reindex API>> to cancel reindexes that are waiting for the {es} reindex task to complete
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include::upgrade-assistant/status.asciidoc[]
include::upgrade-assistant/reindexing.asciidoc[]
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include::upgrade-assistant/batch_reindexing.asciidoc[]
include::upgrade-assistant/batch_queue.asciidoc[]
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include::upgrade-assistant/default-field.asciidoc[]
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include::upgrade-assistant/check_reindex_status.asciidoc[]
include::upgrade-assistant/cancel_reindex.asciidoc[]