Release Notes - Kafka - Version 0.8.1
** New Feature
* [KAFKA-554] - Move all per-topic configuration into ZK and add to the CreateTopicCommand
* [KAFKA-561] - Rebuild index file for a log segment if there is none
* [KAFKA-657] - Add an API to commit offsets
* [KAFKA-918] - Change log.retention.hours to be log.retention.mins
* [KAFKA-925] - Add optional partition key override in producer
* [KAFKA-1092] - Add server config parameter to separate bind address and ZK hostname
* [KAFKA-1117] - tool for checking the consistency among replicas
** Improvement
* [KAFKA-347] - change number of partitions of a topic online
* [KAFKA-741] - Improve log cleaning dedupe buffer efficiency
* [KAFKA-1001] - Handle follower transition in batch
* [KAFKA-1084] - Validate properties for custom serializers
* [KAFKA-1127] - kafka and zookeeper server should start in daemon mode and log to correct position
* [KAFKA-1131] - copy some more files into the release tar and zip that are needed/desired
* [KAFKA-1136] - Add subAppend in Log4jAppender for generic usage
* [KAFKA-1158] - remove bin/run-rat.sh
* [KAFKA-1159] - try to get the bin tar smaller
* [KAFKA-1160] - have the pom reference the exclusions necessary so folks don't have to
* [KAFKA-1161] - review report of the dependencies, conflicts, and licenses into ivy-report
* [KAFKA-1162] - handle duplicate entry for ZK in the pom file
* [KAFKA-1163] - see whats going on with the 2.8.0 pom
* [KAFKA-1186] - Add topic regex to the kafka-topics tool
* [KAFKA-1232] - make TopicCommand more consistent
** Bug
* [KAFKA-172] - The existing perf tools are buggy
* [KAFKA-184] - Log retention size and file size should be a long
* [KAFKA-330] - Add delete topic support
* [KAFKA-515] - Log cleanup can close a file channel opnened by Log.read before the transfer completes
* [KAFKA-615] - Avoid fsync on log segment roll
* [KAFKA-648] - Use uniform convention for naming properties keys
* [KAFKA-671] - DelayedProduce requests should not hold full producer request data
* [KAFKA-677] - Retention process gives exception if an empty segment is chosen for collection
* [KAFKA-712] - Controlled shutdown tool should provide a meaningful message if a controller failover occurs during the operation
* [KAFKA-739] - Handle null values in Message payload
* [KAFKA-759] - Commit/FetchOffset APIs should not return versionId
* [KAFKA-852] - Remove clientId from OffsetFetchResponse and OffsetCommitResponse
* [KAFKA-897] - NullPointerException in ConsoleConsumer
* [KAFKA-930] - Integrate preferred replica election logic into kafka
* [KAFKA-933] - Hadoop example running DataGenerator causes kafka.message.Message cannot be cast to [B exception
* [KAFKA-985] - Increasing log retention quickly overflows scala Int
* [KAFKA-1004] - Handle topic event for trivial whitelist topic filters
* [KAFKA-1009] - DumpLogSegments tool should return error on non-existing files
* [KAFKA-1020] - Remove getAllReplicasOnBroker from KafkaController
* [KAFKA-1036] - Unable to rename replication offset checkpoint in windows
* [KAFKA-1052] - integrate add-partitions command into topicCommand
* [KAFKA-1055] - BrokerTopicStats is updated before checking for MessageSizeTooLarge
* [KAFKA-1060] - Break-down sendTime into responseQueueTime and the real sendTime
* [KAFKA-1074] - Reassign partitions should delete the old replicas from disk
* [KAFKA-1090] - testPipelinedRequestOrdering has transient failures
* [KAFKA-1091] - full topic list can be read from metadata cache in the broker instead of ZK
* [KAFKA-1097] - Race condition while reassigning low throughput partition leads to incorrect ISR information in zookeeper
* [KAFKA-1103] - Consumer uses two zkclients
* [KAFKA-1104] - Consumer uses two zkclients
* [KAFKA-1112] - broker can not start itself after kafka is killed with -9
* [KAFKA-1116] - Need to upgrade sbt-assembly to compile on scala 2.10.2
* [KAFKA-1121] - DumpLogSegments tool should print absolute file name to report inconsistencies
* [KAFKA-1128] - Github is still showing 0.7 as the default branch
* [KAFKA-1129] - if we have a script to run the jar then we should include it in the build or remove it during release
* [KAFKA-1133] - LICENSE and NOTICE files need to get into META-INF when jars are built before they're signed for publishing to maven
* [KAFKA-1135] - Code cleanup - use Json.encode() to write json data to zk
* [KAFKA-1140] - Move the decoding logic from ConsumerIterator.makeNext to next
* [KAFKA-1141] - make changes to downloads for the archive old releases to new old_releases folder
* [KAFKA-1151] - The Hadoop consumer API doc is not referencing the contrib consumer
* [KAFKA-1152] - ReplicaManager's handling of the leaderAndIsrRequest should gracefully handle leader == -1
* [KAFKA-1154] - replicas may not have consistent data after becoming follower
* [KAFKA-1156] - Improve reassignment tool to output the existing assignment to facilitate rollbacks
* [KAFKA-1157] - Clean up Per-topic Configuration from Kafka properties
* [KAFKA-1164] - kafka should depend on snappy 1.0.5 (instead of 1.0.4.1)
* [KAFKA-1166] - typo in kafka-server-stop.sh
* [KAFKA-1168] - OfflinePartitionCount in JMX can be incorrect during controlled shutdown
* [KAFKA-1169] - missing synchronization in access to leaderCache in KafkaApis
* [KAFKA-1170] - ISR can be inconsistent during partition reassignment for low throughput partitions
* [KAFKA-1172] - error when creating topic with kafka-topics.sh
* [KAFKA-1183] - DefaultEventHandler causes unbalanced distribution of messages across partitions
* [KAFKA-1198] - NullPointerException in describe topic
* [KAFKA-1200] - inconsistent log levels when consumed offset is reset
* [KAFKA-1202] - optimize ZK access in KafkaController
* [KAFKA-1205] - README in examples not update
* [KAFKA-1208] - Update system test still to use kafka-topics instead of kafka-create-topics shell
* [KAFKA-1214] - Support arguments to zookeeper-shell.sh script
* [KAFKA-1228] - Socket Leak on ReplicaFetcherThread
* [KAFKA-1243] - Gradle issues for release
* [KAFKA-1263] - Snazzy up the README markdown for better visibility on github
* [KAFKA-1271] - controller logs exceptions during ZK session expiration
* [KAFKA-1275] - fixes for quickstart documentation
** Task
* [KAFKA-823] - merge 0.8 (51421fcc0111031bb77f779a6f6c00520d526a34) to trunk
* [KAFKA-896] - merge 0.8 (988d4d8e65a14390abd748318a64e281e4a37c19) to trunk
* [KAFKA-965] - merge c39d37e9dd97bf2462ffbd1a96c0b2cb05034bae from 0.8 to trunk
* [KAFKA-1051] - merge from 0.8 da4512174b6f7c395ffe053a86d2c6bb19d2538a to trunk
* [KAFKA-1080] - why are builds for 2.10 not coming out with the trailing minor version number
** Sub-task
* [KAFKA-121] - pom should include standard maven niceties
* [KAFKA-1244] - The LICENSE and NOTICE are missing from the jar files
* [KAFKA-1245] - the jar files and pom are not being signed so nexus is failing to publish them
* [KAFKA-1246] - The 2.10 version is showing up as 2.10.1
* [KAFKA-1248] - jars are missing from maven upload that were previously there
* [KAFKA-1249] - release tar name is different than 0.8.0
* [KAFKA-1254] - remove vestigial sbt
* [KAFKA-1274] - gradle.properties needs the variables used in the build.gradle