09efdc3151
When building headers for a REST response, we de-duplicate the warning headers based on the actual warning value. The current implementation of this uses a capturing regular expression that is prone to excessive backtracking. In cases a request involves a large number of warnings, this extraction can be a severe performance penalty. An example where this can arise is a bulk indexing request that utilizes a deprecated feature (e.g., using deprecated forms of boolean values). This commit is an attempt to address this performance regression. We already know the format of the warning header, so we do not need to use a regular expression to parse it but rather can parse it by hand to extract the warning value. This gains back the vast majority of the performance lost due to the usage of a deprecated feature. There is still a performance loss due to logging the deprecation message but we do not address that concern in this commit. Relates #24114 |
||
|---|---|---|
| .. | ||
| licenses | ||
| src | ||
| build.gradle | ||