Installation of Hue on Apache Hadoop and Hive (Redhat)

Balachandar R.A.

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Jul 27, 2016, 11:44:33 AM7/27/16

to Hue-Users

I have a running Hadoop 2.7 and Hive 2.0.1. I am trying to install Hive editor so that I can easily write HiveQL queries. Hence, I downloaded and built Hue 3.10. I configure it to work with HDFS and Hive (I am not sure they are correct). When I launch Hue, it checks configuration and I see an error in the right corner top. (Check config failed)

I launch the web browser from another client machine.

The summary of the error is as follows:-

Checking current configuration

Configuration files located in /home/work_IW1/opt/hue/desktop/conf

Potential misconfiguration detected. Fix and restart Hue.

hadoop.hdfs_clusters.default.webhdfs_url Current value: http://40.221.1.44:50070/webhdfs/v1

Failed to access filesystem root

Resource Manager Failed to contact an active Resource Manager: (error 504)

desktop.secret_key Current value:

Secret key should be configured as a random string. All sessions will be lost on restart

SQLITE_NOT_FOR_PRODUCTION_USE SQLite is only recommended for small development environments with a few users.

Hive Failed to access Hive warehouse: /user/hive/warehouse

HBase Browser Failed to authenticate to HBase Thrift Server, check authentication configurations.

Impala No available Impalad to send queries to.

Oozie Editor/Dashboard The app won't work without a running Oozie server

Pig Editor The app won't work without a running Oozie server

I do not mind about other apps but really concerned with Hadoop and Hive. Any help wll be greatly appreciated.

More information:-

I login to Hue using my username : baamarna5617 (unix account)

All my hadoop files were created using the above account.

My hdfs-site.xml

<name>dfs.webhdfs.enabled</name>

</property>

</configuration>

My core-site.xml

<name>fs.default.name</name>

</property>

My hive-site.xml

<name>hive.hwi.listen.host</name>

</property>

<name>hive.server2.transport.mode</name>

</property>

<name>hive.server2.thrift.bind.host</name>

</property>

</property>

<name>hive.server2.webui.host</name>

</property>

<name>hive.server2.webui.port</name>

</property>

<name>hive.server2.thrift.http.port</name>

</property>

<name>hive.server2.thrift.http.path</name>

<value>cliservice</value>

</property>

<name>hive.server2.thrift.port</name>

</property>

<name>hive.metastore.thrift.framed.transport.enabled</name>

</property>

<name>hive.metastore.warehouse.dir</name>

<value>/user/hive/warehouse</value>

</property>

Any link to documentation will be helpful.

Romain Rigaux

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Jul 27, 2016, 5:49:19 PM7/27/16

to Balachandar R.A., Hue-Users

Is WebHDFS of HDFS on? http://www.cloudera.com/documentation/enterprise/latest/topics/cdh_ig_cdh_hue_configure.html

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Balachandar R.A.

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Jul 28, 2016, 2:27:04 AM7/28/16

to Romain Rigaux, Hue-Users

Hi

Thanks for your response.

I followed the steps described in the link. But, could not succeed.

I have the below information in my

hdfs-site.xml

<name>dfs.webhdfs.enabled</name>

</property>

core-site.xml

<name>hadoop.proxyuser.baamarna5617.hosts</name>

</property>

<name>hadoop.proxyuser.baamarna5617.groups</name>

</property>

I have installed hadoop as user baamarna5617 and all my files in hdfs were created by this user.

When I launch hue browser, I created an user account with this name 'baamarna5617'. I have /user/baamarna5617 in my hdfs.

In my mapred-site.xml, I have included the below lines

<name>jobtracker.thrift.address</name>

</property>

<name>mapred.jobtracker.plugins</name>

<value>org.apache.hadoop.thriftfs.ThriftJobTrackerPlugin</value>

<description>Comma-separated list of jobtracker plug-ins to be activated.</description>

</property>

And in my https-site.xml

<name>httpfs.proxyuser.hue.hosts</name>

</property>

<name>httpfs.proxyuser.hue.groups</name>

</property>

Now more information:-

I am working behing the network proxy

I could not successfully create a directory using webhdfs. I can list the hdfs directory and read a file but renaming a file and creation of a directory in hdfs fails.

The error I see in Hue's server logs is as follows:-

[27/Jul/2016 23:08:55 -0700] webhdfs ERROR Failed to determine superuser of WebHdfs athttp://40.221.1.44:50070/webhdfs/v1/: <HTML><HEAD>

And

[27/Jul/2016 23:10:10 -0700] webhdfs INFO WebHdfs at http://40.221.1.44:50070/webhdfs/v1/ -- Validation error: <HTML><HEAD>

<TITLE>Network Error</TITLE>

</HEAD>

<BODY>

</FONT>

<big>Network Error (tcp_error)</big>

<BR>

</FONT>

</TD></TR>

A communication error occurred: "Operation timed out"

</FONT>

</TD></TR>

The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.

</FONT>

</TD></TR>

<BR>

For assistance, contact the Service Desk (8666).

</FONT>

</TD></TR>

</TABLE>

</blockquote>

</FONT>

</BODY></HTML>

(error 503)

Thanks in advance for your help

regards

Bala

Balachandar R.A.

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Jul 28, 2016, 4:57:13 AM7/28/16

to Romain Rigaux, Hue-Users

Hello

I fixed the curl issue which inturn fixed my problem with hue. Now, hue is talking with hive and Hadoop

Thanks and regards
Bala

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