Summary:
Integrate pmd on the Java API to catch and report common Java coding problems; fix or suppress a basic set of PMD checks.
Link pmd into java build / CI
Add a pmd dependency to maven
Add a jpmd target to Makefile which runs pmd
Add a workflow to Circle CI which runs pmd
Configure an initial default pmd for CI
Repair lots of very simple PMD reports generated when we apply pmd-rules.xml
Repair or exception for PMD rules in the CloseResource category, which finds unclosed AutoCloseable resources.
We special-case the configuration of CloseResource and use the // NOPMD comment in source the avoid reports where we are the API creating an AutoCloseable, and therefore returning an unclosed resource is correct behaviour.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/11221
Reviewed By: akankshamahajan15
Differential Revision: D50369930
Pulled By: jowlyzhang
fbshipit-source-id: a41c36b44b3bab7644df3e9cc16afbdf33b84f6b
Summary:
Performance improvements for `get()` paths in the RocksJava API (JNI).
Document describing the performance results.
Replace uses of the legacy `DB::Get()` method wrapper returning data in a `std::string` with direct calls to `DB::Get()` passing a pinnable slice to receive this data. Copying from a pinned slice direct to the destination java byte array, without going via an intervening std::string, is a major performance gain for this code path.
Note that this gain only comes where `DB::Get()` is able to return a pinned buffer; where it has to copy into the buffer owned by the slice, there is still the intervening copy and no performance gain. It may be possible to address this case too, but it is not trivial.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10970
Reviewed By: pdillinger
Differential Revision: D42125567
Pulled By: ajkr
fbshipit-source-id: b7a4df7523b0420cadb1e9b6c7da3ec030a8da34
Summary:
Improvements to the RocksJava release process:
* Generates the Maven artifact version number as part of the release step
* Also generates appropriate checksum files to speed the deploy and publish step
Pull Request resolved: https://github.com/facebook/rocksdb/pull/7219
Reviewed By: ltamasi
Differential Revision: D22983481
Pulled By: pdillinger
fbshipit-source-id: 7b8ffaf46471cd3cda181eb830c962b317d2e688
Alan Paxton