Apache Jackrabbit Oak 1.5.1 发布了，Apache Jackrabbit 是由 Apache Foundation 提供的 JSR-170 的开放源码实现。
改进记录：
Bug
[OAK-4135] - Test failure:
org.apache.jackrabbit.j2ee.TomcatIT.testTomcat
[OAK-4148] - RAT plugin complains about derby files
[OAK-4155] - oaj.oak.spi.security.authentication.credentials not
exported
Improvement
[OAK-2392] - [DocumentMK] Garbage Collect older revisions of
binary properties in main document
[OAK-4095] - Include timestamp in journal log entries
[OAK-4108] - Reduce logging from JournalGarbageCollector
[OAK-4130] - Simplify IdentifierManager.getReferences
[OAK-4136] - release profile in maven
[OAK-4152] - Expose the index path to IndexEditor
[OAK-4159] - Expose an option in Oak class to enable failing of
commit upon missing index editor provider
[OAK-4160] - Expose type property for ReferenceEditorProvider
[OAK-4163] - LastRevRecoveryAgent: improve startup diagnostics
[OAK-4164] - Expose path stats for Lucene index
New Feature
[OAK-4144] - Expose PropertyIndex stats