I have a text file containing json records I would like to load to Hive. My json looks like: {\"vr\":1,\"tm\":1312816191516,\"tms\":\"08-08-2011 15:09:51.516 GMT\",\"as\":1002,\"pb\":1102,\"cts\":[12
Here is an example: Is it possible to have same mapper run against multiple reducers at the same time? like
I\'ve a single-node pseudo-distributed hadoop setup on a unix system in the network. What are the minimum steps to开发者_运维百科 add another computer/node (cygwin) on the network to form a hadoop clu
I have recently setup a vmware instance with hadoop on my windows 7 machine开发者_运维技巧. I also setup hadoop plugin within eclipse and successfully ran an example map-reduce program on the VM. Howe
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references,or expertise, but this question will likely solicit debate, a
When you join tables which are distributed on the same key and used these key columns in the join condition, then each SPU (machine) in netezza works 100% independent of the other (see nz-interview).
I have been using Hadoop quite a while now. After some time I realized I n开发者_高级运维eed to chain Hadoop jobs, and have some type of workflow. I decided to use Oozie , but couldn\'t find much of i
开发者_如何学GoI want to print each step of my \"map\" after its execution on the console. Something like
2 basic questions that trouble me: How can I be sure that each of the 32 files hive uses to store my tables sits on its unique machine?
I bit confuse with Hadoop hive which i read from Wiki used for make OLAP. Now i want to make OLAP on Hive from OLTP database which use Mysql开发者_如何转开发.
加载中,请稍侯......