panguixin

### Description Currently, when performing KNN exact search, we consistently set the HitQueue size to `k`. However, there may be instances where the number of candidates is actually lower than...

Avoid recalculating the norm of the target vector when using cosine metric

1

### Description Currently, in the KNN retrieval process, we use `VectorSimilarityFunction#compare` to calculate the score between the target vector and the current vector. This method requires recalculating the norm of...

### Description The monthName/dayName function uses `Locale.getDefault` to get the display name, which may return different results in different env and cause a test error. ``` org.opensearch.sql.sql.DateTimeFunctionIT > testMonthName FAILED...

Setting a limit for file cache capacity

1

### Is your feature request related to a problem? Please describe Following up to #14004 . Currently we use the total space of file cache path to verify the user-defined...

Optimize the canMatch phase on the data node

4

### Description Two changes here: 1. short circuit can match check, respond with `CanMatchResponse(false, null)` if cannot match(`minMax` value is useless if corresponding shard is not match); 2. only primary...

Support common format geo point

2

### Description Currently, we only support geo point in the format of an object with a latitude and longitude, this PR aims to expand our support to all common formats...

### Description Fix #2796 . ### Issues Resolved #2796 ### Check List - [x] New functionality includes testing. - [x] All tests pass, including unit test, integration test and doctest...

**What is the bug?** When executing a SQL query with REGEXP filter, get the following exception: ``` { "error": { "reason": "Error occurred in OpenSearch engine: all shards failed", "details":...

Replace Map<String,Object> with IntObjectHashMap for KnnVectorsReader

7

### Description Following up on #13686.

Enhance OS value parsing

1

### Description #3001 ### Related Issues Resolves #3001 ### Check List - [x] New functionality includes testing. - [x] New functionality has been documented. - [x] New functionality has javadoc...