Xiaolong Peng

[BUG] Date time format/parser issue

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**Describe the bug** When index a documents with filed in date time format that OpenSearch may not supported, it always throw exception, it was well supported in ElasticSearch-6.8. Document example:...

8334231: Optimize MethodData layout

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Hi all, This PR is a part of https://bugs.openjdk.org/browse/JDK-8334227 to optimize Hotspot C++ class layouts, this one is for the layout of MethodData. Here is the original layout from `pahole`:...

8302113: Improve CRC32 intrinsic with crypto pmull on AArch64

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Backport JDK-8302113 --------- ### Progress - [x] Change must not contain extraneous whitespace - [ ] [JDK-8302113](https://bugs.openjdk.org/browse/JDK-8302113) needs maintainer approval - [x] Commit message must refer to an issue ###...

In allocation profiler result of an internal service, ACCP MD5 digest contributes over 6%, w/ further digging into ACCP implementation, we found the array copy in singlePass could be avoided...