Re: Unable to take backup for hbase

aditya27_lpu · ‎04-02-2018

Hi Geoffrey Shelton Okot I have already set CLASSPATH. And yes I am able to view my jar files. What did you want me to achieve by following the above steps?

aditya27_lpu · ‎04-02-2018

I tried using "snapshot_all" but it gives me error-: hbase(main):002:0> snapshot_all NameError: undefined local variable or method `snapshot_all' Also when using help command, available command for snapshots are Group name: snapshots Commands: clone_snapshot, delete_all_snapshot, delete_snapshot, list_snapshots, restore_snapshot, snapshot

aditya27_lpu · ‎04-02-2018

Hi @schhabra As mentioned in above link provided by you, "HBase Snapshots allow you to take a snapshot of a table" whereas I want to take snapshot or backup of complete cluster.

aditya27_lpu · ‎04-02-2018

@Rahul Thanks for the response. I am using hbase as standalone and not the HDP Sandbox. Would really appreciate if you could help me with some alternative for HBase backup when used in standalone.

aditya27_lpu · ‎03-29-2018

I am unable to take backup for Hbase. I am trying below command inside bin directory of hbase ./hbase backup create full hdfs://192.168.0.1:9000/hbase_1 -w 3 But i get "Error: Could not find or load main class backup" as error. Do I need to add any extra jar file for backup? I am using hbase 1.2.6. Any help on this would be appreciated.

aditya27_lpu · ‎03-29-2018

Hi, This feature is not available in hbase 1.2.6. You can check 'HBase-6721 JIRA' this ticket for more updates.

aditya27_lpu · ‎02-16-2018

Thanks for the response @Sergey. But I still have few doubts. Request you to please reply on this. When you say and I quote 'There are only several utilities that may use MR jobs such as bulkload or rowcount', there should be containers getting created at Node Managers. The thing is when I run my bulk upload utility, still I can see no containers getting created (UI at port 8088 doesn't show any thing happening) . Can you please suggest how can I check if MR jobs are getting created at the time of bulk upload or say when I do a row count. If YARN takes care of MR jobs in hadoop(HDFS+MR) happening in parallel, what exactly does a co-processors do to achieve parallel processing in HBase. How do I verify that yes, scans or gets or puts are happening in a parallel way. Any link on this will help big time.

aditya27_lpu · ‎02-15-2018

I am trying to achieve multi-tenancy in HBase. I want to create group of RegionServers to each namespace I create. I referred HBase-6721 JIRA ticket. I added below property in hbase-site.xml <property> <name>hbase.coprocessor.master.classes</name> <value>org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint</value> </property> <property> <name>hbase.master.loadbalancer.class</name> <value>org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer</value> </property> But I get class not found exception-: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer not found Is there any jar file which needs to get included for this? Also, If I do not add the above property and just run below command on the hbase shell, hbase(main):001:0> add_rsgroup 'group' NoMethodError: undefined method `add_rsgroup' for #<Object:0x57ddd45b> Can someone tell me what am I missing here? I am using HBase verion 1.2.6. Is this option of multi-tenancy not available in HBase 1.2.x? Thanks in advance.

aditya27_lpu · ‎02-09-2018

Node Manager is used to start, execute and monitor containers on YARN. Co-processor on the other hand is a framework which does distributed computation directly within the HBase server processes. I have tables in HBase which I query using phoenix. My doubt is when I have coprocessor which is doing the computation and fetching the result from HBase, then why do I need Node Manager at all. The reason I ask this question is currently on my YARN UI, I see the three nodes of my cluster, which has 8GB&8core assigned to it. But none of it is getting used while I fire query at HBase. The no of container created is 0 as well. Can someone please help me understand this concept or refer any link

aditya27_lpu · ‎11-10-2017

I have a local windows machine where I have installed oracle Virtual box. On the Virtual Box, I have installed hortonworks sandbox. The sandbox is running fine. Now I want to query, insert etc on HBase(present in VirtualBox) using phoenix(on local machine). The issue is that I am not able to connect to the HBase(via zookeeper). I do not have the option of creating bridge in my environment. I am using NAT in the networks option of virtual box. I am constantly getting timeout while connecting the alias. The phoenix set up is correct as I am able to connect phoenix with hbase on another linux box. I feel I am not entering the correct IP for connecting the alias with hbase. While adding alias I have tried the below entries as URL-: jdbc:phoenix:sandbox.hortonworks.com:2181:/hbase-unsecure jdbc:phoenix:172.x.x.1:2181:/hbase-unsecure jdbc:phoenix:127.0.0.1:2181:/hbase-unsecure jdbc:phoenix:10.x.x.2:/hbase-unsecure Also, I will mention the versions currently I am using-: HDFS 2.7.3 HBase 1.1.2 Zookeeper 3.4.6 Squirrel 3.8.0 phoenix-4.12.0-HBase-1.2-client Any help or correct link will really help. Please let me know if the question is not clear or require any more information. Thanks.

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Date Registered	‎11-10-2017 01:35 PM
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Re: Unable to take backup for hbase

Re: Unable to take backup for hbase

Re: Unable to take backup for hbase

Re: Unable to take backup for hbase

Unable to take backup for hbase

Re: multi-tenancy HBase - grouping of Region Serve...

Re: Why does HBase need a nodemanager when it uses...

multi-tenancy HBase - grouping of Region Servers

Why does HBase need a nodemanager when it uses cop...

Not able to connect zookeeper from phoenix