Hi,

 

I am facing some issue while setting up Solr on Hadoop using Slider. I am
using HDP 2.3which has got Slider 0.80. I am following LucidWorks blog at
https://github.com/LucidWorks/solr-slider for the same. I already have a
single node Hortonworks HDP cluster. When I try to setup Solr on my HDP
cluster using Slider, I am facing some issues.

 

As per the blog, I have performed the below steps:

 

1.       I have setup a single node HDP cluster for which the hostname is
myhdpcluster.com with all the essential services including ZooKeeper and
Slider running on it.

2.       Updated the resource manager address and port in slider-client.xml
present under /usr/hdp/current/slider-client/conf

<property>

        <name>yarn.resourcemanager.address</name>

<value> myhdpcluster.com:8032</value>

</property>

3.       Cloned the LucidWorks git and moved it under /home/hdfs/solr-slider

4.       Downloaded solr latest stable distribution and renamed it as
solr.tgz and placed it under /home/hdfs/solr-slider/package/files/solr.tgz

5.       Next ran the following command from within the
/home/hdfs/solr-slider folder

zip -r solr-on-yarn.zip metainfo.xml package/

6.       Next ran the following command as hdfs user

slider install-package --replacepkg --name solr --package
/home/hdfs/solr-slider/solr-on-yarn.zip

7.       Modified the following settings in the
/home/hdfs/solr-slider/appConfig-default.json file

"java_home": MY_JAVA_HOME_LOCATION

    "site.global.app_root": "${AGENT_WORK_ROOT}/app/install/solr-5.2.1",
(Should this be changed to any other value?)

    "site.global.zk_host": " myhdpcluster.com:2181",

8.       Set yarn.component.instances to 1 in resources-default.json file

9.       Next ran the following command

slider create solr --template /home/hdfs/solr-slider/appConfig-default.json
--resources /home/hdfs/solr-slider/resources-default.json

 

During this step, I am seeing an message INFO client.RMProxy - Connecting to
ResourceManager at myhdpcluster.com/10.0.2.15:8032 

 
INFO ipc.Client - Retrying connect to server:
myhdpcluster.com/10.0.2.15:8032. Already tried 0 time(s); 

 

This message keeps repeating for 50 times and then pauses for a couple of
seconds and then prints the same message in a loop eternally. Not sure on
where the problem is. I verified the Resource Manager URL and its pointing
correctly. In my case, it's myhdpcluster.com:8032 I even tried passing
--manager param to the slider create solr command, but without any luck.

I am able to login to Ambari console and see all the services running fine ,
including YARN related and ZooKeeper. Also, I could login to Resource
Manager's web UI as well and its working fine.

 

Here is the complete content of the appConfig-default.json file. I haven't
worked with Slider so far, so not very sure if some mistake has crept into
this file while modifying it as per the changes mentioned by Lucidworks on
the Github page. However, I tried to simulate the steps mentioned on the
Github Solr-Slider page. As you can see from below file, I am using Java 7. 

 

{

  "schema": "http://example.org/specification/v2.0.0";,

  "metadata": {

  },

  "global": {

    "application.def": "/home/hdfs/solr-slider/solr-on-yarn.zip",

    "java_home": "/usr/lib/jvm/jre-1.7.0-openjdk.x86_64",

    "site.global.app_root":
"${AGENT_WORK_ROOT}/app/install/solr-5.2.1-SNAPSHOT",

    "site.global.zk_host": "myhdpcluster.com:2181",

    "site.global.solr_host": "${SOLR_HOST}",

    "site.global.listen_port": "${SOLR.ALLOCATED_PORT}",

    "site.global.xmx_val": "1g",

    "site.global.xms_val": "1g",

    "site.global.gc_tune": "-XX:NewRatio=3 -XX:SurvivorRatio=4
-XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8
-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ConcGCThreads=4
-XX:ParallelGCThreads=4 -XX:+CMSScavengeBeforeRemark
-XX:PretenureSizeThreshold=64m -XX:+UseCMSInitiatingOccupancyOnly
-XX:CMSInitiatingOccupancyFraction=50 -XX:CMSMaxAbortablePrecleanTime=6000
-XX:+CMSParallelRemarkEnabled -XX:+ParallelRefProcEnabled -verbose:gc
-XX:+PrintHeapAtGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps
-XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime",

    "site.global.zk_timeout": "15000",

    "site.global.server_module": "--module=http",

    "site.global.stop_key": "solrrocks",

    "site.global.solr_opts": ""

  },

  "components": {

    "slider-appmaster": {

      "jvm.heapsize": "512M"

    },

    "SOLR": {

    }

  }

}

 

Can anyone please let me know what could have gone wrong with my
configuration and what changes need to be made to get it working? Many
thanks in advance.

 

Thanks & Regards

Vijay


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