Summary:
Changes to support sharing block cache using the Java API.
Previously DB instances could share the block cache only when the same Options instance is passed to all the DB instances. But now, with this change, it is possible to explicitly create a cache and pass it to multiple options instances, to share the block cache.
Implementing this for [Rocksandra](https://github.com/instagram/cassandra/tree/rocks_3.0), but this feature has been requested by many java api users over the years.
Closes https://github.com/facebook/rocksdb/pull/3623
Differential Revision: D7305794
Pulled By: sagar0
fbshipit-source-id: 03e4e8ed7aeee6f88bada4a8365d4279ede2ad71
Summary:
This is an abstraction for working with custom Comparators implemented in native C++ code from Java. Native code must directly extend `rocksdb::Comparator`. When the native code comparator is compiled into the RocksDB codebase, you can then create a Java Class, and JNI stub to wrap it.
Useful if the C++/JNI barrier overhead is too much for your applications comparator performance.
An example is provided in `java/rocksjni/native_comparator_wrapper_test.cc` and `java/src/main/java/org/rocksdb/NativeComparatorWrapperTest.java`.
Closes https://github.com/facebook/rocksdb/pull/3334
Differential Revision: D7172605
Pulled By: miasantreble
fbshipit-source-id: e24b7eb267a3bcb6afa214e0379a1d5e8a2ceabe
Summary:
Add Java-side copy constructors for:
- Options
- DBOptions
- ColumnFamilyOptions
- WriteOptions
along with unit tests to assert the copy worked.
NOTE: Unit tests are failing in travis but it looks like a global timeout issue. These tests pass.
Closes https://github.com/facebook/rocksdb/pull/3450
Differential Revision: D6874425
Pulled By: sagar0
fbshipit-source-id: 5bde68ea5b5225e071faea2628bf8bbf10bd65ab
Summary: Grandfather in super old lint issues to make a clean slate for moving forward that allows us to have stronger enforcement on new issues.
Reviewed By: yiwu-arbug
Differential Revision: D6821806
fbshipit-source-id: 22797d31ec58e9eb0255d3b66fedfcfcb0dc127c
Summary:
Add a new histogram stat called rocksdb.db.flush.micros for memtable
flush
Closes https://github.com/facebook/rocksdb/pull/3269
Differential Revision: D6559496
Pulled By: anand1976
fbshipit-source-id: f5c771ba2568630458751795e8c37a493ff9b14d
Summary:
This diff adds a new ticker stat, NUMBER_ITER_SKIP, to count the
number of internal keys skipped during iteration. Keys can be skipped
due to deletes, or lower sequence number, or higher sequence number
than the one requested.
Also, fix the issue when StatisticsData is naturally aligned on cacheline boundary,
padding becomes a zero size array, which the Windows compiler doesn't
like. So add a cacheline worth of padding in that case to keep it happy.
We cannot conditionally add padding as gcc doesn't allow using sizeof
in preprocessor directives.
Closes https://github.com/facebook/rocksdb/pull/3177
Differential Revision: D6353897
Pulled By: anand1976
fbshipit-source-id: 441d5a09af9c4e22e7355242dfc0c7b27aa0a6c2
Summary:
Java's `Status.SubCode` was out of sync with `include/rocksdb/status.h:SubCode`.
When running out of disc space this led to an `IllegalArgumentException` because of an invalid status code, rather than just returning the corresponding status code without an exception.
I added the missing status codes.
By this, we keep the behaviour of throwing an `IllegalArgumentException` in case of newly added status codes that are defined in C but not in Java.
We could think of an alternative strategy: add in Java another code "UnknownCode" which acts as a catch-all for all those status codes that are not yet mirrored from C to Java. This approach would never throw an exception but simply return a non-OK status-code.
I think the current approach of throwing an Exception in case of a C/Java inconsistency is fine, but if you have some opinion on the alternative strategy, then feel free to comment here.
Closes https://github.com/facebook/rocksdb/pull/3050
Differential Revision: D6129682
Pulled By: sagar0
fbshipit-source-id: f2bf44caad650837cffdcb1f93eb793b43580c66
Summary:
This PR also includes some cleanup, bugfixes and refactoring of the Java API. However these are really pre-cursors on the road to CompactionFilterFactory support.
Closes https://github.com/facebook/rocksdb/pull/1241
Differential Revision: D6012778
Pulled By: sagar0
fbshipit-source-id: 0774465940ee99001a78906e4fed4ef57068ad5c
Summary:
Now that RocksDB supports conditional merging during point lookups (introduced in #2923), Cassandra value merge operator can be updated to pass in a limit. The limit needs to be passed in from the Cassandra code.
Closes https://github.com/facebook/rocksdb/pull/2947
Differential Revision: D5938454
Pulled By: sagar0
fbshipit-source-id: d64a72d53170d8cf202b53bd648475c3952f7d7f
Summary:
This option was introduced in the C++ API in RocksDB 5.6 in bb01c1880c . Now, exposing it through RocksJava API.
Closes https://github.com/facebook/rocksdb/pull/2908
Differential Revision: D5864224
Pulled By: sagar0
fbshipit-source-id: 140aa55dcf74b14e4d11219d996735c7fdddf513
Summary:
In our testing cluster, we found large amount tombstone has been promoted to kValue type from kMerge after reaching the top level of compaction. Since we used to only collecting tombstone in merge operator, those tombstones can never be collected.
This PR addresses the issue by adding a GC step in compaction filter, which is only for kValue type records. Since those record already reached the top of compaction (no earlier data exists) we can safely remove them in compaction filter without worrying old data appears.
This PR also removes an old optimization in cassandra merge operator for single merge operands. We need to do GC even on a single operand, so the optimation does not make sense anymore.
Closes https://github.com/facebook/rocksdb/pull/2855
Reviewed By: sagar0
Differential Revision: D5806445
Pulled By: wpc
fbshipit-source-id: 6eb25629d4ce917eb5e8b489f64a6aa78c7d270b
Summary:
Plumbed ReadOptions::iterate_upper_bound through JNI.
Made the following design choices:
* Used Slice instead of AbstractSlice due to the anticipated usecase (key / key prefix). Can change this if anyone disagrees.
* Used Slice instead of raw byte[] which seemed cleaner but necessitated the package-private handle-based Slice constructor. Followed WriteBatch as an example.
* We need a copy constructor for ReadOptions, as we create one base ReadOptions for a particular usecase and clone -> change the iterate_upper_bound on each slice operation. Shallow copy seemed cleanest.
* Hold a reference to the upper bound slice on ReadOptions, in contrast to Snapshot.
Signed a Facebook CLA this morning.
Closes https://github.com/facebook/rocksdb/pull/2872
Differential Revision: D5824446
Pulled By: sagar0
fbshipit-source-id: 74fc51313a10a81ecd348625e2a50ca5b7766888
Summary:
As discussed in #2742 , this pull-requests brings the iterator's [SeekForPrev()](https://github.com/facebook/rocksdb/wiki/SeekForPrev) functionality to the java-api. It affects all locations in the code where previously only Seek() was supported.
All code changes are essentially a copy & paste of the already existing implementations for Seek().
**Please Note**: the changes to the C++ code were applied without fully understanding its effect, so please take a closer look. However, since Seek() and SeekForPrev() provide exactly the same signature, I do not expect any mistake here.
The java-tests are extended by new tests for the additional functionality.
Compilation (`make rocksdbjavastatic`) and test (`java/make test`) run without errors.
Closes https://github.com/facebook/rocksdb/pull/2747
Differential Revision: D5721011
Pulled By: sagar0
fbshipit-source-id: c1f951cddc321592c70dd2d32bc04892f3f119f8
Summary:
Remove cassandra tombstone when reaching the max compaction level (full merge). if all columns collected key will be removed in next compaction via compaction filter
Closes https://github.com/facebook/rocksdb/pull/2791
Reviewed By: sagar0
Differential Revision: D5722465
Pulled By: wpc
fbshipit-source-id: 61e9898a5686551653a16383255aeaab3197e65e
Summary:
I might have missed these while doing some recent cassandra code reviews.
Closes https://github.com/facebook/rocksdb/pull/2663
Differential Revision: D5520138
Pulled By: sagar0
fbshipit-source-id: 340930afe9efe03c75f535a1da1f89bd3e53c1f9
Summary:
I haven't looked to see if a class variable inside a loop like this is always initialised.
Closes https://github.com/facebook/rocksdb/pull/2602
Differential Revision: D5475937
Pulled By: IslamAbdelRahman
fbshipit-source-id: 8570b308f9a4b49e2a56ccc9e9b84d7c46568c15
Summary:
Major changes in this PR:
* Implement CassandraCompactionFilter to remove expired columns and rows (if all column expired)
* Move cassandra related code from utilities/merge_operators/cassandra to utilities/cassandra/*
* Switch to use shared_ptr<> from uniqu_ptr for Column membership management in RowValue. Since columns do have multiple owners in Merge and GC process, use shared_ptr helps make RowValue immutable.
* Rename cassandra_merge_test to cassandra_functional_test and add two TTL compaction related tests there.
Closes https://github.com/facebook/rocksdb/pull/2588
Differential Revision: D5430010
Pulled By: wpc
fbshipit-source-id: 9566c21e06de17491d486a68c70f52d501f27687
Summary:
Adding SSTFileWriter's newly introduced put, merge and delete apis to the Java api. The C++ APIs were first introduced in #2361.
Add is deprecated in favor of Put.
Merge is especially needed to support streaming for Cassandra-on-RocksDB work in https://issues.apache.org/jira/browse/CASSANDRA-13476.
Closes https://github.com/facebook/rocksdb/pull/2392
Differential Revision: D5165091
Pulled By: sagar0
fbshipit-source-id: 6f0ad396a7cbd2e27ca63e702584784dd72acaab
Summary:
Previously sst_file_writer only supports kTypeValue, we need kTypeMerge and kTypeDeletion also as user requested.
Closes https://github.com/facebook/rocksdb/pull/2361
Differential Revision: D5139402
Pulled By: lightmark
fbshipit-source-id: 092a60756d01692539d817a3765ebfd58a8d7f88
Summary:
Previously the Java implementation of `RocksDB#addFile` was both incomplete and not inline with the C++ API.
Rather than fix it, as I see that `rocksdb::DB::AddFile` is now deprecated in favour of `rocksdb::DB::IngestExternalFile`, I have removed the old broken implementation and implemented `RocksDB#ingestExternalFile`.
Closes https://github.com/facebook/rocksdb/issues/2261
Closes https://github.com/facebook/rocksdb/pull/2291
Differential Revision: D5061264
Pulled By: sagar0
fbshipit-source-id: 85df0899fa1b1fc3535175cac4f52353511d4104
Summary:
Replacement of #2147
The change was squashed due to a lot of conflicts.
Closes https://github.com/facebook/rocksdb/pull/2194
Differential Revision: D4929799
Pulled By: siying
fbshipit-source-id: 5cd49c254737a1d5ac13f3c035f128e86524c581
Summary:
Replace Options::use_direct_writes with Options::use_direct_io_for_flush_and_compaction
Now if Options::use_direct_io_for_flush_and_compaction = true, we will enable direct io for both reads and writes for flush and compaction job. Whereas Options::use_direct_reads controls user reads like iterator and Get().
Closes https://github.com/facebook/rocksdb/pull/2117
Differential Revision: D4860912
Pulled By: lightmark
fbshipit-source-id: d93575a8a5e780cf7e40797287edc425ee648c19
Summary:
This is an effort to club all string related utility functions into one common place, in string_util, so that it is easier for everyone to know what string processing functions are available. Right now they seem to be spread out across multiple modules, like logging and options_helper.
Check the sub-commits for easier reviewing.
Closes https://github.com/facebook/rocksdb/pull/2094
Differential Revision: D4837730
Pulled By: sagar0
fbshipit-source-id: 344278a
Summary:
While running `make jtest` using IBM Java, it fails at compactRangeToLevel with the below error.
```
Run: org.rocksdb.RocksDBTest testing now -> compactRangeToLevel
JVMJNCK056E JNI error in ReleaseByteArrayElements: Got memory 0x00003FFF94AA8908 from object 0x00000000000C7F78, releasing from 0x00000000000C7F68
JVMJNCK077E Error detected in org/rocksdb/RocksDB.compactRange0(J[BI[BIZII)V
JVMJNCK024E JNI error detected. Aborting.
JVMJNCK025I Use -Xcheck:jni:nonfatal to continue running when errors are detected.
Fatal error: JNI error
Makefile:205: recipe for target 'run_test' failed
make[1]: *** [run_test] Error 87
make[1]: Leaving directory '/home/ubuntu/rocksdb/java'
Makefile:1542: recipe for target 'jtest' failed
make: *** [jtest] Error 2
```
After checking the code, it is vivid that we are messing up the `ReleaseByteArrayElements` args in `rocksdb_compactrange_helper`.
```
.................
1959 s = db->CompactRange(compact_options, &begin_slice, &end_slice);
1960 }
Closes https://github.com/facebook/rocksdb/pull/2060
Differential Revision: D4831427
Pulled By: yiwu-arbug
fbshipit-source-id: dd02037
Summary:
Move some files under util/ to new directories env/, monitoring/ options/ and cache/
Closes https://github.com/facebook/rocksdb/pull/2090
Differential Revision: D4833681
Pulled By: siying
fbshipit-source-id: 2fd8bef
Summary:
This adds almost all missing options to RocksJava
Closes https://github.com/facebook/rocksdb/pull/2039
Differential Revision: D4779991
Pulled By: siying
fbshipit-source-id: 4a1bf28
Summary:
I have manually audited the entire RocksJava code base.
Sorry for the large pull-request, I have broken it down into many small atomic commits though.
My initial intention was to fix the warnings that appear when running RocksJava on Java 8 with `-Xcheck:jni`, for example when running `make jtest` you would see many errors similar to:
```
WARNING in native method: JNI call made without checking exceptions when required to from CallObjectMethod
WARNING in native method: JNI call made without checking exceptions when required to from CallVoidMethod
WARNING in native method: JNI call made without checking exceptions when required to from CallStaticVoidMethod
...
```
A few of those warnings still remain, however they seem to come directly from the JVM and are not directly related to RocksJava; I am in contact with the OpenJDK hostpot-dev mailing list about these - http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-February/025981.html.
As a result of fixing these, I realised we were not r
Closes https://github.com/facebook/rocksdb/pull/1890
Differential Revision: D4591758
Pulled By: siying
fbshipit-source-id: 7f7fdf4
Summary:
…action
The two options, min_partial_merge_operands and verify_checksums_in_compaction, are not seldom used. Remove them to reduce the total number of options. Also remove them from Java and C interface.
Closes https://github.com/facebook/rocksdb/pull/1902
Differential Revision: D4601219
Pulled By: siying
fbshipit-source-id: aad4cb2
Summary:
Remove disableDataSync, and another similarly named disable_data_sync options.
This is being done to simplify options, and also because the performance gains of this feature can be achieved by other methods.
Closes https://github.com/facebook/rocksdb/pull/1859
Differential Revision: D4541292
Pulled By: sagar0
fbshipit-source-id: 5b3a6ca
Adam Retter