WebHDFS vs HttpFS [英] WebHDFS vs HttpFS

问题描述

WebHDFS REST之间有什么区别API 和 HttpFS ？

如果我理解正确：

• HttpFS是一个独立的服务，公开REST API HDFS的顶层


• WebHDFS是内置于HDFS的REST API。它不需要任何进一步的安装。

我是否正确？

什么时候建议使用一个而不是另一个？

解决方案

我已阅读与您的问题相关的文章。以下是链接。

https://www.linkedin.com/today/post/article/20140717115238-176301000-accessing-hdfs-using-the-webhdfs-rest-api-vs- httpfs

WebHDFS vs HttpFs
WebHDFS和HttpFs之间的主要区别：WebHDFS需要访问集群的所有节点，被读取，它直接从该节点传输，而在HttpF中，单个节点将起到类似于网关的作用，并且将是到客户端节点的单点数据传输。因此，在大文件传输过程中HttpF可能会被阻塞，但好处是我们正在最小化访问HDFS所需的空间。

What is the difference between the WebHDFS REST API and HttpFS?

If I understand correctly:

• HttpFS is an independent service that exposes a REST API on top of HDFS
• WebHDFS is a REST API built-into HDFS. It doen't require any further installation

Am I correct?

When would be advisable to use one instead of the other?

解决方案

I have read a article related with your question. following is the link.

https://www.linkedin.com/today/post/article/20140717115238-176301000-accessing-hdfs-using-the-webhdfs-rest-api-vs-httpfs

WebHDFS vs HttpFs Major difference between WebHDFS and HttpFs: WebHDFS needs access to all nodes of the cluster and when some data is read it is transmitted from that node directly, whereas in HttpFs, a singe node will act similar to a "gateway" and will be a single point of data transfer to the client node. So, HttpFs could be choked during a large file transfer but the good thing is that we are minimizing the footprint required to access HDFS.

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