54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
[float]
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[[breaking_80_indices_changes]]
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=== Indices changes
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[float]
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==== Force Merge API changes
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Previously, the Force Merge API allowed the parameters `only_expunge_deletes`
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and `max_num_segments` to be set to a non default value at the same time. But
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the `max_num_segments` was silently ignored when `only_expunge_deletes` is set
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to `true`, leaving the false impression that it has been applied.
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The Force Merge API now rejects requests that have a `max_num_segments` greater
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than or equal to 0 when the `only_expunge_deletes` is set to true.
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[float]
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==== On-disk term dictionary cannot be disabled
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The `index.force_memory_term_dictionary` setting was introduced in 7.0 as a
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temporary measure to allow users to opt-out of the optimization that leaves the
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term dictionary on disk when appropriate. This optimization is now mandatory
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and the setting is removed.
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[float]
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==== Remove support for `template` in put index template requests
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In 6.0, we deprecated the `template` field in put index template requests
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in favor of using `index_patterns`. Support for the `template` field is now
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removed in 8.0.
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[float]
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==== Remove synced flush
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Synced flush was deprecated in 7.6 and is removed in 8.0. Use a regular flush
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instead as it has the same effect as a synced flush in 7.6 and later.
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[float]
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==== Indices with soft deletes disabled
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Creating indices with soft deletes disabled was deprecated in 7.6 and
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is no longer supported in 8.0. The setting index.soft_deletes.enabled
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can no longer be set to false. As the setting defaults to true, simply
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leave the setting unset.
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[float]
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==== Translog retention settings are no longer supported
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Translog retention settings `index.translog.retention.size` and
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`index.translog.retention.age` were effectively ignored in 7.4,
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deprecated in 7.7, and removed in 8.0 in favor of
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<<index-modules-history-retention,soft deletes>>.
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