question Re: How does data flow to hive client in Archives of Support Questions (Read Only)

How does data flow to hive client

maks71 — Sat, 11 Mar 2017 04:24:29 GMT

Hello,

I have hive client installed on my Linux machine, If I issue a query , would output data of the query flow directly from data nodes to my machine or would it go to hive server ( it's installed on a node other than the data nodes ) and then arrive at my machine?

Thanks in advance.

Re: How does data flow to hive client

namaheshwari — Sat, 11 Mar 2017 09:01:34 GMT

This might be a good read:

http://www.guru99.com/introduction-hive.html

Re: How does data flow to hive client

deepesh1 — Wed, 15 Mar 2017 05:35:14 GMT

Depending on the client the data flow from the query works differently. In case of using Hive CLI, you access the HDFS directly to get the data, and Hive Metastore for table metadata. In case of HiveServer2 client (ex Beeline CLI) all data transmission happens through HiveServer2. HiveServer2 is recommended from security and scalability perspective.