Hive Test Connection Exception

HelloLola

hello i am using rapidminer for my master degree (big data)

i want to use hadoop but i didn't get a connection using cloudera

please help me

[May 25, 2017 9:25:58 AM] SEVERE: java.util.concurrent.TimeoutException
[May 25, 2017 9:25:58 AM] SEVERE: Hive server 2 connection test timed out. Please check that the server/daemon runs and is accessible on the address and port you specified.
(2017年5月25日9:25:58我]严重:测试失败:艾滋病毒e connection
[May 25, 2017 9:25:58 AM] SEVERE: Connection test for 'first connection' failed.

HelloLola

hi i want to say i am using Mac 2.66 GHz intel core i7 and 8Go 1067 MHz DDR3

thank you in advance

Thomas_Ott

First off, this is in the wrong thread. I will move this the Radoop Forum.

Are you using the Cloudera Quickstart image? Did you follow these configuration instructions?https://docs.www.turtlecreekpls.com/radoop/installation/distribution-notes.html

HelloLola

hello thank you for replying

yes i did all the steps but it still not working

can you help me please

HelloLola

yes i am using Cloudera Quickstart image and these are some screenshot that describe my situation

Thomas_Ott

Untoggle the default ports settings and try that.

If you visit the Cloudera manager, is Hive running?

HelloLola

是的,当我untoggle it it doesn't work, and all of the cluters have a bad status (red color). When I correct some error an another error appearalso the cloudera sevice slows the mac

Thomas_Ott

If the Hive status is red (bad), then you have something going on with your cluster. Make sure Hive is green before you try to connect Radoop to it.

HelloLola

Hello, I was trying to correct the error in cloudera and having the green point, but I still have the same problem

Please help me, I can't find a solution for this

thank you in advance

HelloLola

This is the configuration I made

please help meHow can I solve this problem?

phellinger

Hi,

1) The "too many parallel JDBC connections are held" is an error that may appear after several unsuccessful connection attempts. It is not the original cause of the problem, but when it appears, you need torestart Studio, unfortunately, we hope to fix this very soon.

2) I guess the original problem is still the Hive connection timeout. First of all, I would increase the timeout values for the connection testing, as the quickstart VM that runs on the same machine may be slow. InPreferences, you can filter for "timeout", and increase these two Radoop settings, see the screenshot:

3) Check ifquickstart.clouderaaddress can be accessed from the host machine, for example usingpingor a web browser to access the Cloudera Manager (not from the guest, but the host machine).

4) You can check if the Hive connection request reaches the Hive service by checking the Hive service's Log on the Cloudera Manager interface (called Role Log). If you see log entries when RapidMiner runs the Hive connection test, then the request reaches the cluster, otherwise there may be a networking problem.

5) If you are using this cluster for RapidMiner (Radoop)only, you can safely remove several services that are not used by the RapidMiner. You can make the cluster much faster with that. To achieve that, you can停止and删除all servicesexceptHDFS, Hive, Spark, YARN (MR Included), ZooKeeper- these are needed by RapidMiner.

Best,

Peter