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Revolg DOCSUP-998 Document the always_fetch_merged_part setting#123

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BayoNet merged 6 commits intoBayoNet:docs/CLICKHOUSEDOCS-605-always_fetch_merged_partfrom
olgarev:revolg-DOCSUP-998-add_always_fetch_merged_part_setting
Jun 24, 2020
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Revolg DOCSUP-998 Document the always_fetch_merged_part setting#123
BayoNet merged 6 commits intoBayoNet:docs/CLICKHOUSEDOCS-605-always_fetch_merged_partfrom
olgarev:revolg-DOCSUP-998-add_always_fetch_merged_part_setting

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@olgarev olgarev commented Jun 11, 2020

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Changelog category:

  • Documentation

Detailed description / Documentation draft:
Add always_fetch_merged_part setting


Restricts replica to merge parts by itself.

If enabled, replica never merges parts and always downloads merged parts from other replicas.
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I moved this content to the "Possible values" section.


## always_fetch_merged_part {#always_fetch_merged_part}

Prohibits data parts merging at replicas in [MergeTree](../../engines/table-engines/mergetree-family/mergetree.md)-engine tables.
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Let's change MergeTree for ReplicatedMergeTree* and give a link to https://clickhouse.tech/docs/en/engines/table-engines/mergetree-family/replication/ (relative link).


Prohibits data parts merging at replicas in [MergeTree](../../engines/table-engines/mergetree-family/mergetree.md)-engine tables.

If enabled, replica never merges parts and always downloads merged parts from other replicas. If there is no merged data yet, the replica waits for them to appear.
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Merge this and the following paragraph into one. Consider starting the united paragraph with the "When merging is prohibited..." phrase instead of "If enabled".

`... the replica never ..."

@BayoNet BayoNet merged commit c4d4d2e into BayoNet:docs/CLICKHOUSEDOCS-605-always_fetch_merged_part Jun 24, 2020
BayoNet added a commit that referenced this pull request Jul 2, 2020
…House#11921)

* Revolg DOCSUP-998 Document the always_fetch_merged_part setting (#123)

* Add always_fetch_merged_part setting

* revolg-DOCSUP-998-add_always_fetch_merged_part_setting link fixed

* Apply suggestions from code review

Co-authored-by: BayoNet <da-daos@yandex.ru>

* Add always_fetch_merged_part setting. Updates.

* Update docs/en/operations/settings/settings.md

Co-authored-by: BayoNet <da-daos@yandex.ru>

* Add always_fetch_merged_part setting. Updates.

Co-authored-by: Olga Revyakina <revolg@yandex-team.ru>
Co-authored-by: BayoNet <da-daos@yandex.ru>

* CLICKHOUSEDOCS-605: Minor fixes.

* CLICKHOUSEDOCS-605: Added Plausible to Adopters.

* Update docs/ru/operations/settings/settings.md

Co-authored-by: alesapin <alesapin@gmail.com>

* Update docs/en/operations/settings/settings.md

Co-authored-by: alesapin <alesapin@gmail.com>

* CLICKHOUSEDOCS-605: Fixed access rights description.

Co-authored-by: olgarev <56617294+olgarev@users.noreply.github.com>
Co-authored-by: Olga Revyakina <revolg@yandex-team.ru>
Co-authored-by: Sergei Shtykov <bayonet@yandex-team.ru>
Co-authored-by: alesapin <alesapin@gmail.com>
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2 participants