[DOCS] Add note that write indices are not replicated #82997
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bpintea
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Jan 25, 2022
lockewritesdocs
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Jan 25, 2022
docs/reference/ccr/index.asciidoc
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| @@ -195,6 +195,10 @@ You can't manually modify a follower index's mappings or aliases. To make | |||
| changes, you must update the leader index. Because they are read-only, follower | |||
| indices reject writes in all configurations. | |||
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| NOTE: Although changes to aliases on the leader index are replicated to follower | |||
| indices, write indices are ignored. Follower indices can't accept direct writes, | |||
| so any indices where `is_write_index` is `true` are not replicated. | |||
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so any indices where
is_write_indexistrueare not replicated.
@DaveCTurner, should this be "any indices" or "any index aliases"?
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The indices are replicated, only the information on the alias about is_write_index is not, that flag is always forced to false on the follower.
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The indices are replicated, only the information on the alias about
is_write_indexis not, that flag is always forced to false on the follower.
Thanks for the explanation @henningandersen! I updated the note text in 9b5260f -- let me know if that's accurate.
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Thanks for addressing this @lockewritesdocs , I think this needs a slight change to be correct.
docs/reference/ccr/index.asciidoc
Outdated
| @@ -195,6 +195,10 @@ You can't manually modify a follower index's mappings or aliases. To make | |||
| changes, you must update the leader index. Because they are read-only, follower | |||
| indices reject writes in all configurations. | |||
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| NOTE: Although changes to aliases on the leader index are replicated to follower | |||
| indices, write indices are ignored. Follower indices can't accept direct writes, | |||
| so any indices where `is_write_index` is `true` are not replicated. | |||
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The indices are replicated, only the information on the alias about is_write_index is not, that flag is always forced to false on the follower.
henningandersen
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Jan 28, 2022
Co-authored-by: Henning Andersen <[email protected]>
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* [DOCS] Add note that write indices are not replicated * Clarify note about is_write_index * Clarify leader aliases with is_write_index Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]>
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* [DOCS] Add note that write indices are not replicated * Clarify note about is_write_index * Clarify leader aliases with is_write_index Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]>
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* [DOCS] Add note that write indices are not replicated * Clarify note about is_write_index * Clarify leader aliases with is_write_index Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]>
lockewritesdocs
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* [DOCS] Add note that write indices are not replicated * Clarify note about is_write_index * Clarify leader aliases with is_write_index Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]>
lockewritesdocs
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* [DOCS] Add note that write indices are not replicated * Clarify note about is_write_index * Clarify leader aliases with is_write_index Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]> Co-authored-by: Henning Andersen <[email protected]>
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* upstream/master: (100 commits) Avoid duplicate _type fields in v7 compat layer (elastic#83239) Bump bundled JDK to 17.0.2+8 (elastic#83243) [DOCS] Correct header syntax (elastic#83275) Add unit tests for indices.recovery.max_bytes_per_sec default values (elastic#83261) [DOCS] Add note that write indices are not replicated (elastic#82997) Add notes on indexing to kNN search guide (elastic#83188) Fix get-snapshot-api :docs:integTest (elastic#83273) FilterPathBasedFilter support match fieldname with dot (elastic#83178) Fix compilation issues in example-plugins (elastic#83258) fix ClusterStateListener javadoc (elastic#83246) Speed up Building Indices Lookup in Metadata (elastic#83241) Mute whole suite for elastic#82502 (elastic#83252) Make PeerFinder log messages happier (elastic#83222) [Docs] Add supported _terms_enum field types (elastic#83244) Add an aggregator for IPv4 and IPv6 subnets (elastic#82410) [CI] Fix 70_time_series/default sort yaml test failures (elastic#83217) Update test-failure Issue Template to include "needs:triage" label elastic#83226 Add an index->step cache to the PolicyStepsRegistry (elastic#82316) Improve support for joda datetime to java datetime transition in Painless (elastic#83099) Fix joda migration for week based methods in Painless (elastic#83232) ... # Conflicts: # x-pack/plugin/rollup/src/main/java/org/elasticsearch/xpack/rollup/v2/TransportRollupAction.java
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Adds a note to the CCR docs that write indices are ignored when indices are replicated from a leader to a follower.
Preview link: https://elasticsearch_82997.docs-preview.app.elstc.co/guide/en/elasticsearch/reference/master/xpack-ccr.html#ccr-update-leader-index
Closes #82679