I'm new to the Hortonworks Sandbox and I was wondering if it allows for an external connection to be made to it using curl from a remote machine to retrieve finished jobs or it initiate a new job. If it can, an example of using it would be greatly appreciated.
I have tried for some time and I keep on getting a login in page as the response from the curl request (even when I use the user|password command from curl using the appropriate credentials).
I am using a Hortonworks Sandbox v1.3 virtual box image that Hortonworks provides as a free download to run the environment.
Pig is not service, so you can't connect to it.
Instead of this, you can consider connecting to WebHCat (formerly Templeton) which has REST-API to hive, pig and several other components. Documentation is here: http://docs.hortonworks.com/HDPDocuments/HDP1/HDP-1.2.4/bk_dataintegration/content/ch_using_hcatalog_1.html
If you're using VBox version, use 127.0.0.1:9090 to connect to webhcat, if other version, so use :9090
Especially look at templeton/v1/queue/:jobid to retrieve job status,
templeton/v1/pig to initiate pig job
Related
Suppose I had a configuration that included 1) a local Windows client, 2) a remote unix server without windowing capability, and 3) a separate remote hadoop cluster that houses data to be queried with (among other things) Hive. I am seeking a way to establish the Hive Metastore as a data source in a Jetbrains IDE installed on the Windows client (specifically Intellij).
The wrinkle in this configuration is Kerberos, which is installed on the remote unix server, but not on the local Windows machine. Typically, the Hive Metastore is accessed from the unix server. It should be assumed that installing Kerberos on the Windows client is not a feasible scenario, and it isn't clear to me how Intellij could feasibly be used on a windowless unix environment in any scenario. However, I really want the features it provides to be available.
Is it actually possible to get Intellij to somehow leverage the ability to initialize a Kerberos ticket on the unix server to connect to Hive?
Is it possible to get Intellij to reactively query my Kerberos credentials upon initialization of a connection with the Hive Metastore?
This seems less than likely, but any ideas would be greatly appreciated.
I'm trying to use HUE Beeswax to connect my company's Hive database. Firstly, is it possible to use HUE installed on my mac to be connected with remote Hive server? If it does, how am I supposed to find the address for the Hive server which is running on our private server? Only thing I can do is to type 'hive' and put some sql queries in hive shell. I already installed HUE but can't figure out how to connect it to the remote Hive server. Any tips would be much appreciated.
If all you want is a desktop connection to Hive, you only need a JDBC client, not a full web app like Hue.
In any case, Hive CLI is deprecated. Beeline is preferred. To use Beeline and Hue, you need a HiveServer2 running.
To find the address of the HiveServer2, if you have it, you need to find your hive-site.xml file on the Hadoop cluster, and export it. Other ways to get this information are available in Ambari or Cloudera Manager (but if you're using a Cloudera CDH cluster, you already have Hue). The Thrift interface is what you want. Default port is 10000
When you setup the Hue, you will need to find the hue.ini file, in which, edit the section that starts with [beeswax] and fill in the necessary values. Personally, I find that section fairly straightforward
You can read the Hue github to find the requirements for running it on a Mac
I am trying to update HDP architecture so data residing in Hive tables can be accessed by REST APIs. What are the best approaches how to expose data from HDP to other services?
This is my initial idea:
I am storing data in Hive tables and I want to expose some of the information through REST API therefore I thought that using HCatalog/WebHCat would be the best solution. However, I found out that it allows only to query metadata.
What are the options that I have here?
Thank you
You can very well use WebHDFS which is basically a REST Service over Hadoop.
Please see documentation below:
https://hadoop.apache.org/docs/r1.0.4/webhdfs.html
The REST API gateway for the Apache Hadoop Ecosystem is called KNOX
I would check it before explore any other options. In other words, Do you have any reason to avoid using KNOX?
What version of HDP are you running?
The Knox component has been available for quite a while and manageable via Ambari.
Can you get an instance of HiveServer2 running in HTTP mode?
This would give you SQL access through J/ODBC drivers without requiring Hadoop config and binaries (other than those required for the drivers) on the client machines.
Let's imagine I have access to an Hive datawarehouse, I can query it using some webservice. The problem is that I cannot automate the query using this service, so I would like to be able to query Hive from an external script (that I would be able to automate).
For now, I've only seen people running Hive on their local machine and querying it, I was wondering if it was possible to do it remotely ? If yes, how ?
Thanks a lot !
As far as I understood, you are asking if there are ways to connect to hive from a remote machine?
You could install hive client (beeline) on any remote machine and connect to hive via jdbc.
Take a look here:
https://cwiki.apache.org/confluence/display/Hive/HiveServer2+Clients
An easy way to do this, is to deploy the client configuration of hadoop/yarn on the remote machine. If the remote cluster is secured with firewalls and kerberos, you will need access to those first. After that it's just a matter of starting up a hive shell or committing a job submit to Yarn.
When you use Cloudera, you might be able to add the host to the cluster and install a "gateway" role for yarn and hive on the target machine. This is very straight-forward and requires just a few minutes of work.
Alternatively using the JDBC connector should also work, as stated in Facha's answer.
I have installed Hadoop 2.7.1 in psuedo distributed mode (all daemons on single machine). It's up and running and I'm able to access HDFS through command line and run the jobs and I'm able to see the output.
I can access http://localhost:50070/dfshealth.html#tab-overview. it shows version and cluster status and can access hadoop file system.
I found one link and applied its accepted solution but that does not work for me. When I am trying to access http://127.0.0.1:54310, I am getting below error message
It looks like you are making an HTTP request to a Hadoop IPC port. This is
not the correct port for the web interface on this daemon.
Any help is appreciated.
Thanks..
I am using MR2 and not able to track my job on 8088. When I run map reduce job, it submit the job on http://localhost:8080 and thats url is not opening to track the job.
Use port 50030 if you are using MRV1 for YARN use port 8088 for accessing resource manager.