add release notes

release_notes.txt

@@ -1,4 +1,57 @@
-Release 0.90.1 on 10/10/2011
+Release 0.96 on 09/05/2012
+
+Changes made since 0.90.1
+
+ * Monitoring:
+     * Append cluster name to various mbeans for better stats display
+     * Implement average throughput in bytes
+     * Add BDB JE stats 
+     * Add 95th and 99th latency tracking 
+     * Add stats for ClientRequestExecutorPool
+     * Add error/exception count and max getall count
+     * BDB+ Data cleanup Monitoring changes
+ * Rebalancing:
+     * Donor-based rebalancing (see https://github.com/voldemort/voldemort/wiki/Voldemort-Donor-Based-Rebalancing for more details)
+     * Rebalancing integration testing framework (under test/integration/voldemort/rebalance/)
+     * Post rebalancing data cleanup ()
+     * Generate multiple cluster.xml files based on the number specified when running the tool and choose the cluster with the smallest std dev as the final-cluster.xml
+     * Add status output to log for updateEntries (used by rebalancing)
+ * Read-only pipeline:
+     * Add hftp and webhdfs support
+     * Read-only bandwidth dynamic throttler
+     * Add minimum throttle limit per store
+     * Add rollback capability to the Admin tool
+ * Voldemort-backed stack and index linked list impl
+ * Change client requests to not process responses after timeout
+ * Modified client request executor timeout to not factor in the NIO selector timeout
+ * Added BDB native backup capabalities, checksum verification and incremental backups (well tested, but not yet used in production)
+ * Add additional client-side tracing for debugging and consistency analytics
+ * Clean up logging during exception at client-side
+ * Security exception handling
+ * Add snappy to CompressionStrategyFactory
+ * Add configurable option to interrupt service being unscheduled
+ * Add logging support for tracking ScanPermit owners (for debugging purposes)
+ * Add a jmx terminate operation for async jobs
+ * Add zone option for restore from replicas
+ * Changing the enable.nio.connector to true by default
+ * Better disconnection handling for python client
+ * Split junit tests into a long and a short test suites
+ * Add separate timeouts for different operations (put, get, delete, and getAll
+ * Allow getAll to return partial results upon timeout
+ * Improved cluster generation tool
+ * Added log4j properties folder for junit test
+ * Bug fixes:
+     * httpclient 3.x to httpclient 4.x
+     * Fix NPE in listing read-only store versions
+     * Fixed 2 failure detector bugs during rebalancing or node swapping
+     * Fixed a thread leak issue in StreamingSlopPusher
+     * Fixed a NIO bug
+     * Fixed a bug in TimeBasedInconsistency resolver.
+     * Fixed race condition in client socket close
+     * Fixed a potential deadlock issue in ScanPermitWrapper
+     * Fixed a bug where a read returns null (on rare occations) when being concurrent with a write
+     * Fixed a performance bug in HdfsFetcher when hftp is used
+
 
 Changes made since 0.90