javadoc里面的描述是这样的. CountDownLatch: A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes. CyclicBarrier : A synchronization aid that allows a set of threads to all wait for e…
https://ci.apache.org/projects/flink/flink-docs-release-1.6/dev/event_timestamp_extractors.html 根据官网描述,Flink提供预定义的时间戳提取/水位线发射器.如下: Flink provides abstractions that allow the programmer to assign their own timestamps and emit their own watermarks. Mor…
我希望,This is a new day! 在看代码之前,我认为你还是应该先整理一下心情,来听我说几句: 首先,我希望你是在早上边看这篇blog,然后一边開始动手操作,假设你仅仅是看blog而不去自己对照项目,作用不是非常大.一日之计在于晨,所以怀着一颗对技术渴望,激动的.亢奋的心情去学习.你才干有所得. 嗯,就拿鄙人当时做项目来说,每天早上起来的第一件事情.就是研究XMPPFramework作者的代码,依照模块来分析和模仿书写.睡觉的时候还在思考,分析.总结... 当然我并非说每一个Dev…