Apache NiFi 0.7.0 发布了，本次发布主要提升如下：
New Application Features
NiFi now supports exposing key/value pairs set in "nifi.properties" to Expression Language.
Improvements to Existing Capabilities
Added the ability to bulk using Index or Update to PutElasticSearch.
Allow concurrent execution of ExecuteScript.
Expression language now has a random number function.
New Extensions
New processors to Get data from SNMP agents and execute SNMP set requests.
Added new processor to Put to Slack.
New processors to Get and Put data to an MQTT broker.
Added processor to listen for messages using the Lumberjack protocol.
New ExtractMediaMetadata processor to extract metadata from various file types using Apache Tika.
New processors to Delete, Put and Get AWS DynamoDB.
Added processor to poll notification events provided by HDFS Inotify interface.
Add ReportingTask for sending Provenance events over Site-To-Site.
Important Stability Improvements
Fixed instance where archiver was not respecting nifi.content.repository.archive.max.usage.percentage.
Resolved issue where incoming connection could be deleted while processor was still running.
Fixed issue where FileSystemRepository could leave open file handles to data that had already been archived and/or deleted.
New Documentation
A new NiFi in Depth document was created to give an in-depth, developer level, look at NiFi and its design decisions.
Bug 修复相关记录，可以在这里查看。
Apache NiFi 是一个易于使用、功能强大而且可靠的数据处理和分发系统。Apache NiFi 是为数据流设计。它支持高度可配置的指示图的数据路由、转换和系统中介逻辑。
架构：
集群管理器：
