//////////////////// Licensed to Cloudera, Inc. under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. Cloudera, Inc. licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. //////////////////// == Versions === History v0.9.3 2/4/11:: Multi-master functional. Microsoft Windows support. Metrics framework including json support. Updated Source/Sink API. Improved robustness of non-translated agent chains and multiple logical node configurations. Updated configuration languages cconstructs. Usability improvements. v0.9.2 11/15/10:: Support for all Hadoop supported compression codecs. Avro RPC support. Flexible throughput throttling. Useful error messages in shell. Upgrades to Thrift RPC support. Performance and robustness improvements in tail and exec. v0.9.1u1 10/12/10:: Added write support for Kerberized HDFS. Flume cookbook. v0.9.1 8/9/10:: Improved error messages and visibility of property configuration values. First external contributions. Fixed reconfiguration hangs. Improved implementing plugins documentation. Updated scribe and syslog support. Compression on output files. v0.9 6/29/10 :: metrics and reporting framework, logical nodes+logical names abstraction, wal/dfo isolation by flow, transformation-based high level sinks. Open source and initial push to github. v0.3 3/31/10 :: ZK based master/multi-master, automatic failovers for data and control planes. flume shell. deb/rpm packaging. v0.2 1/21/10 :: Different reliability modes: WAL 2.0, DFO, Best effort. Output file escaping/bucketing. Proliferation of many sink and decorators. v0.1 11/23/09 :: First installation deployment, users tests. v0.0 9/21/09 :: First cut with current architecture (centralized master, configuration language, web interface.) First version of WAL. Simple visualizations, samplers, thrift based rpc. pre history 7/21/09 :: First commit. design, experimental implementations. Initial implementation had individual agent and collector programs, watchdog