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Removing outdated limitations in Searchable Snapshots describing KNN is not compatible. #8817

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Dec 4, 2024
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Removing outdated limitations in Searchable Snapshots describing KNN is not compatible. #8817

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Removing outdated limitations in Searchable Snapshots describing KNN …
Nov 26, 2024
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Update _tuning-your-cluster/availability-and-recovery/snapshots/searc…
0ctopus13prime Dec 4, 2024
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Merge branch 'main' into searchable-snapshot-knn
kolchfa-aws Dec 4, 2024
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3 changes: 1 addition & 2 deletions _tuning-your-cluster/availability-and-recovery/snapshots/searchable_snapshot.md
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Expand Up @@ -46,7 +46,7 @@
- node.search.cache.size=50gb
```


- Since 2.18, k-NN indices (NMSLIB and FAISS) now support searchable snapshots.

Check failure on line 49 in _tuning-your-cluster/availability-and-recovery/snapshots/searchable_snapshot.md

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[vale] reported by reviewdog 🐶
[OpenSearch.SubstitutionsError] Use 'indexes' instead of 'indices'.

Raw Output:
{"message": "[OpenSearch.SubstitutionsError] Use 'indexes' instead of 'indices'.", "location": {"path": "_tuning-your-cluster/availability-and-recovery/snapshots/searchable_snapshot.md", "range": {"start": {"line": 49, "column": 20}}}, "severity": "ERROR"}

Check failure on line 49 in _tuning-your-cluster/availability-and-recovery/snapshots/searchable_snapshot.md

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GitHub Actions / style-job 

[vale] reported by reviewdog 🐶
[Vale.Terms] Use 'Faiss' instead of 'FAISS'.

Raw Output:
{"message": "[Vale.Terms] Use 'Faiss' instead of 'FAISS'.", "location": {"path": "_tuning-your-cluster/availability-and-recovery/snapshots/searchable_snapshot.md", "range": {"start": {"line": 49, "column": 40}}}, "severity": "ERROR"}
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## Create a searchable snapshot index

Expand Down Expand Up @@ -109,4 +109,3 @@
- Searching remote data can impact the performance of other queries running on the same node. We recommend that users provision dedicated nodes with the `search` role for performance-critical applications.
- For better search performance, consider [force merging]({{site.url}}{{site.baseurl}}/api-reference/index-apis/force-merge/) indexes into a smaller number of segments before taking a snapshot. For the best performance, at the cost of using compute resources prior to snapshotting, force merge your index into one segment.
- We recommend configuring a maximum ratio of remote data to local disk cache size using the `cluster.filecache.remote_data_ratio` setting. A ratio of 5 is a good starting point for most workloads to ensure good query performance. If the ratio is too large, then there may not be sufficient disk space to handle the search workload. For more details on the maximum ratio of remote data, see issue [#11676](https://github.com/opensearch-project/OpenSearch/issues/11676).
- k-NN native-engine-based indexes using `faiss` and `nmslib` engines are incompatible with searchable snapshots.
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