Add Status to RocksDBException so that meaningful function result Status from the C++ API isn't lost (#1273)

* [refactor] Split Java ColumnFamilyOptions into mutable and immutable and implement any missing immutable options

* [feature] Implement RocksDB#setOptions

More granular steps in the Makefile, can help with running all or single Java tests (and with ASAN build - https://github.com/facebook/rocksdb/wiki/JNI-Debugging) (#1237)

Summary: Corresponding change to D56331.

Test Plan:
Now build succeeds:

  $ make jclean && make rocksdbjava

Reviewers: yhchiang, IslamAbdelRahman, adamretter

Reviewed By: adamretter

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D56913

Benchmark Java comparator vs C++ comparator

Summary:
When running `make rocksdbjava V=1`, it currently does
not print out the original command but something odd instead:

    mkdir -p jl/db

This patch tries to fix this issue.

Test Plan: make rocksdbjava V=1

Reviewers: igor, sdong, IslamAbdelRahman, meyering

Reviewed By: meyering

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D47061

Summary:
Merge pull request #665 by adamretter

Exposes BackupEngine from C++ to the Java API. Previously only BackupableDB was available

Test Plan: BackupEngineTest.java

Reviewers: fyrz, igor, ankgup87, yhchiang

Reviewed By: yhchiang

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D42873

Summary:
In 3.10 the C++ code was extended with a MemEnv implementation. This
is now also available in RocksJava.

Changes:
- Extraced abstract super class Env
- Introduced RocksMemEnv
- Remove unnecessary disposeInternal method. The disposal of the default environment is managed by C++ so there needs to be no disposeInternal method in Java.
- Introduced a RocksMemEnvTest, which is aligned with the C++ equivalent.

Test Plan:
make rocksdbjava
make jtest

Reviewers: adamretter, yhchiang, ankgup87

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D35619

Summary:
Within this commit a new AbstractLogger was introduced
which allows to handle log messages at an application level.

Log messages are passed up to Java using a JNI callback.

This allows a Java-Developer to use common Java APIs for log
messages e.g. SLF4J, LOG4J, etc. Within this commit no new
dependencies were introduced, which keeps the RocksDB API clean
and doesn`t force a developer to use a predefined high-level Java API.

Another feature is to dynamically set a custom loggers verbosity at
runtime using its public method `setInfoLogLevel` and to retrieve
the currently active level using the `infoLogLevel` method.

Test Plan:
make clean jclean rocksdbjava jtest
mvn -f rocksjni.pom package

Reviewers: adamretter, ankgup87, yhchiang

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D34755

Within this commit a new AbstractLogger was introduced
which pushes info log messages all the way up to Java.

- Resolve problem while using a temporary data folder
- Fix test

- NativeLibraryLoader Test
- EnvironmentTest Bugfix

Summary:
As the C++ part exposes now SequenceNumber retrieval
for Snapshots we want this obviously also in the Java API.

Test Plan:
make rocksdbjava
make jtest
mvn -f rocksjni.pom test

Reviewers: yhchiang, adamretter, ankgup87

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D32571

Summary:
- AssertionError when initialized with Non-Direct Buffer
- Tests + coverage for DirectSlice
- Slice sigsegv fixes when initializing from String and byte arrays
- Slice Tests

Test Plan: Run tests without source modifications.

Reviewers: yhchiang, adamretter, ankgup87

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D30081

reference

builds to be deleted

Summary:
RocksDB supports two ways of saving snapshots. In
memory and on disk. The later was added with this
pull request to RocksJava.

Test Plan:

Reviewers:

Subscribers:

Prevent non exist error message while executing
clean twice.

- Updated the BackupableDBOptions functionality to 3.8.0.
- Aligned Options implementation with remaining source code.
- Invented test-case.

Previous to this commit too much targets got dependencies
on javadocs target.

Introduced one additional target "javalib" which resolves
that situation. JavaDoc will now be generated once while
executing a task with prefix "rocksdbjava".

- Remove JNI includes on clean
- Remove target folder generated by Maven
- Remove shared object
- Remove jar

It's now possible to set a LogLevel in Options and
DBOptions to control LOG verbosity.