Document ISM rollover any_of grouped conditions and prevent_empty_rollover - #12740
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praladhe wants to merge 3 commits into
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Document ISM rollover any_of grouped conditions and prevent_empty_rollover#12740praladhe wants to merge 3 commits into
praladhe wants to merge 3 commits into
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Document the new any_of rollover syntax (OR-of-ANDs: conditions are AND'd within a group and groups are OR'd), introduced in OpenSearch 3.7. Also add the previously undocumented prevent_empty_rollover parameter (available since 3.4). Signed-off-by: praladhe <praladhe@amazon.com>
praladhe
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dlvenable,
epugh,
kolchfa-aws,
mgodwan,
peterzhuamazon and
sumobrian
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July 4, 2026 19:20
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@praladhe Seems like the code PR has not been merged yet so applying the v-TBD label. Please ping the code PR reviewers to review this PR as part of the feature when it's ready. Thanks! |
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The code PR has been merged. Kindly review. |
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Description
Documents the new grouped
any_ofrollover conditions for the ISMrolloveraction.any_ofaccepts a list of condition groups where all conditions within a group must be met (AND) and any satisfied group triggers rollover (OR), enabling OR-of-ANDs policies such as "roll over when (min_index_age ≥ 7d AND min_size ≥ 20gb) OR (min_primary_shard_size ≥ 50gb)". This complements the existing flat conditions, which are combined with a single implicit OR and remain the default.Specifically, this change:
any_of" section to the ISM rollover action documentation, with syntax, semantics (AND-within-group, OR-across-groups), and an example policy.any_ofand the flat conditions are mutually exclusive, and that existing flat-condition policies are unchanged.prevent_empty_rolloverparameter row to the rollover action parameters table.Related feature implementation: opensearch-project/index-management#1540 (PR opensearch-project/index-management#1667).
Issues Resolved
opensearch-project/index-management#1540
Version
3.7
Frontend features
N/A — this is a backend ISM policy configuration change (documentation only); there is no OpenSearch Dashboards UI component.
Checklist
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