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Add cold start search blog #3520

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Closes #3393

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  • Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the BSD-3-Clause License.

Signed-off-by: Fanit Kolchina <[email protected]>
Signed-off-by: Fanit Kolchina <[email protected]>
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@natebower natebower left a comment

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@kolchfa-aws Editorial review complete. Please see my comment and changes and let me know if you have any questions. Thanks!

Cc: @pajuric

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## Uncovering the root cause

Through detailed investigation using [search slow logs](https://opensearch.org/docs/latest/install-and-configure/configuring-opensearch/logs/#shard-slow-logs) and [query profiling](https://opensearch.org/docs/latest/api-reference/profile/), we traced the root cause to two key settings in OpenSearch:
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"search slow logs" => "shard slow logs"?

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I understand that the link's heading says Shard slow logs but it still commonly referred to as Search slow logs, so I will leave it as it is.

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kolchfa-aws and others added 2 commits December 23, 2024 12:55
Co-authored-by: Nathan Bower <[email protected]>
Signed-off-by: kolchfa-aws <[email protected]>
Signed-off-by: Fanit Kolchina <[email protected]>
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[BLOG] Unraveling Cold Start Searches after upgrading to OpenSearch
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