Changelog History
Page 1
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v1.3.232 Changes
May 03, 2020🚀 This release brings bug fixes and performance improvements related to database ciphering and memory usage control.
ChaCha20 implementation by JetBrains
The new implementation of ChaCha20, modern stream ciphering algorithm widely used nowadays, is written in Kotlin. Prior to this release, ChaCha20 had the only implementation provided by the Legion of the Bouncy Castle. The new implementation is identical to the Bouncy Castle's one in terms of ciphering, but consumes 13% less CPU:
Benchmark Mode Cnt Score Error Units JMHStreamCipherBenchmarks.chaChaCrypt thrpt 12 97.439 ± 1.069 ops/us JMHStreamCipherBenchmarks.jbChaChaCrypt thrpt 12 110.342 ± 0.543 ops/us🚚 The new implementation has been used already for two months in YouTrack InCloud servers, as well as in the main production instance of JetBrains YouTrack. So it's quite safe to just replace the the Bouncy Castle's implementation (cipherId:
jetbrains.exodus.crypto.streamciphers.ChaChaStreamCipherProvider) by the new one (cipherId:jetbrains.exodus.crypto.streamciphers.JBChaChaStreamCipherProvider) and have less CPU consumption as a benefit. The Bouncy Castle's implementation won't be removed in future versions.🌲 Log Cache can use Soft References
👀 As of 1.3.232, it is possible to configure shared log cache to use Soft References (see
EnvironmentConfig#setLogCacheUseSoftReferences). If this setting is turned on, Java GC would be able to reclaim some heap memory occupied by log cache. As before, log cache can't use more memory than certain memory control settings allow. Such memory-flexible log cache can be extremely useful during load peaks, if and when memory consumption and/or memory traffic increases explosively. The setting should be turned on explicitly, any defaults remain unchanged. Thanks to Martin Häusler for the proposal.🐛 Bug fixes
Environments
- XD-793 — GarbageCollector can miss BTree leaf in certain case of data corruption
- XD-802 — Forced close of Environment can result in deadlock under load
Entity Stores
- XD-801 — NumberOfCachingJobs in EntityStoreStatistics is always 0
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v1.3.124 Changes
October 03, 2019🚀 This release brings bug fixes and minor performance improvements related to Entity Stores.
API clarification.
Starting from version 1.3.124,
EntityStore.close()doesn't close underlying explicitly createdEnvironment. Prior to 1.3.124, this contract was undefined.🐛 Bug fixes
- Environments
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v1.3.91 Changes
June 26, 2019⚡️ This is bug fix update.
🐛 Bug fixes
- Environments
- XD-770 — Update of existing BTree fails with exception if specified BTreeBalancePolicy's maximum page size is 4 times less than used before
- XD-774 — removeStore() and openStore() in same transaction cause weird behaviour (thanks to Martin Häusler for reporting)
- XD-778 — WatchingFileDataReader ignores file system events produced by rsync
- XD-780 — Forced GC run doesn't estimate total utilization
- Environments
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v1.3.0 Changes
January 31, 2019This release offers Service Provider Interface for I/O customization in the package
jetbrains.exodus.io. In addition to default disk-based I/O, it lets you configure your application to use an in-memory database, or to access in read-only mode disk-based database opened in another JVM. You can also create your own I/O provider, e.g., for storing data in a remote/cloud file system.🆕 New versioning scheme
🚀 Since this release, versioning is changed in order to satisfy development requirements @Jetbrains. Patch numbers no longer will be successive. E.g., next released version definitely won't be
1.3.1. Apart from that, the new versioning scheme respects all requirements of Semantic Versioning.⚡️ Updates of dependencies
Kotlin 1.3.10.
🐛 Bug fixes
Environments
- #18 — File descriptors leaking issue fix (thanks to Valery Vlasov)
- XD-728 — Log recovery procedure can false negatively diagnose the database is encrypted with unknown cipher parameters in case of recoverable data corruption
- XD-733 — After an OutOfDiskSpaceException, recovery procedure can require application restart
- XD-738 — Utilization profile can get invalid even if there were no cold restarts
- XD-739 — Utilization computed from scratch can be highly inconsistent
- XD-763 — Xodus corrupts data store upon no space left on device
Entity Stores
- XD-730 — FilterLinksIterable doesn't work with multiple links
- XD-736 — EntityIterable handle for SortIterable ignores stability flag
- XD-737 — Invalidation of cached FilterLinksIterable is broken if target EntityIterable is constructed as a query using links
- XD-746 — Reversing iterable with entities may throw an exception
- XD-749 — findLinks fails on empty EntityIterableBase
🐎 Performance improvements
- Environments
🔋 Features
Environments
- XD-709 — Add SPI for log reader and writer customization
Lucene Directory
- XD-754 — Lucene codec compatible with Lucene70Codec with no compression of stored fields
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v1.2.3 Changes
May 16, 2018🚀 Release 1.2.3 brings bug fixes and minor performance improvements.
🐎 As of 1.2.3, Xodus no longer uses NIO by default, i.e.
EnvironmentConfig.DEFAULT.getLogCacheUseNio()returnsfalse. This change can slightly affect performance of certain workloads, but it makes applications more stable and robust.🐛 Bug fixes
- Environments
- XD-629 — Transactions per second could get stuck on wildly incorrect value
- XD-682 — Indeterminate behavior of Cursor opened against a transaction which is flushed then
- XD-692 — Bad diagnostics of invalid cipher parameters
- XD-697 — Illegal reflective access error when running on JRE 9
- XD-698 — Unable to run an application in Docker under Windows
- XD-704 — EnvironmentConfig.DEFAULT can be mutated
- XD-705 — Cursor.close() is supposed to be idempotent but is not
- XD-706 — Undocumented restriction: Can't create mutable tree in a thread different from the one which transaction was created in
🐎 Performance improvements
- Entity Stores
- Environments
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v1.2.2 Changes
March 09, 2018🚀 Release 1.2.2 brings more bug fixes mostly related to database encryption.
🐛 Bug fixes
Environments
- XD-678 — Scytale: create encrypted database in existing folder if it is empty
Entity Stores
- XD-679 — In an encrypted EntityStore, Entity.setBlob(String, java.io.InputStream) can fail if the stream is read before the transaction is flushed
Lucene Directory
- XD-677 — False DataCorruptionException from ExodusIndexInput
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v1.2.1 Changes
February 27, 2018 -
v1.2.0 Changes
February 21, 2018📚 This release offers database encryption. For details, refer to the documentation.
⚡️ Updates of dependencies
Kotlin 1.2.21 is used.
🐛 Bug fixes
Environments
- XD-667 — Transaction leak in GC as a result of race with switching Environment to read-only mode
- XD-673 — put returns false in case of overwrite
Entity Stores
- XD-669 — Entity.getLinks(linkNames) can return result with duplicates
- XD-670 — For descending sorting, StableInMemorySortIterator returns entities with the null property value first
🐎 Performance improvements
Virtual File Systems
- XD-664 — VirtualFileSystem#getFileLength() enumerates all file clusters in case of linear clustering strategy
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v1.1.0 Changes
November 10, 2017🚀 This release makes Xodus compliant with Java 9. Applications using Xodus would be able to run on JRE 9, though the project itself cannot be built under JDK9 due to the bug in Kotlin dokka.
⚡️ Updates of dependencies
Kotlin 1.1.51 is used.
API changes
Entity Stores
- XD-612 — Implement execute/compute in exclusive transaction for persistent store level
- XD-615 — Add method to determine whether StoreTransaction is finished
🐛 Bug fixes
Environments
- XD-614 — Cursor.getPrev() sometimes moves to wrong position in StoreConfig.WITHOUT_DUPLICATES_WITH_PREFIXING setup
- XD-619 — For enough large Store, Cursor.getNext() and Cursor.getPrev() invalidate previously loaded key/value pair even though cursor position doesn't change
- XD-625 — GC might delete data that is still used by opened transactions
- XD-628 — An application can false positively report data corruption
- XD-660 — Exceptions are logged when running on jre 9
Entity Stores
- XD-618 — Invalidation of cached instances of PropertyValueIterable and PropertyRangeIterable can fail for properties of the ComparableSet type
- XD-626 — Attempt to cache an EntityIterable (queried over entities of a newly created type) result can fail
Virtual File Systems
- XD-624 — For enough large file, seek to the end of the file using VfsOutputStream fails
Utils
- XD-622 — An application using Xodus won't run on JDK 9 because of changes in java versioning scheme
🐎 Performance improvements
Entity Stores
- XD-609 — Implement O(M * (log(M) + log(N))) sorting option in case we are sorting an M-sized subset of larger N
⚡️ Further reduction of memory traffic in implementation of the Environments API is done. Tokyo Cabinet benchmarks results updated. Benchmarks for LMDB JNI and Akiban PersistIt added.
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v1.0.6 Changes
July 10, 2017⚡️ This is bug fix update.
🐛 Bug fixes
Environments
- XD-606 — Files of a closed
Environmentare kept mapped bySharedMappedFilesCache
- XD-608 —
Cursor.getPrev()does not move cursor after call toCursor.getSearchKey(..)withStoreConfig.WITHOUT_DUPLICATES_WITH_PREFIXINGEntity Stores
- XD-606 — Files of a closed