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01-26-2016
35
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21
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1
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Title | Views | Posted |
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4835 | 01-18-2018 05:20 AM |
03-18-2019
03:20 PM
How to resolve this, if we are getting in production environment?
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01-18-2018
05:20 AM
2 Kudos
In HA there will be two Namenodes, one is Active and other one is in the Standby state.The Active Namenode is primarily responsible for all running, upcoming operations and client requests in the cluster. At same time Standby acts as a slave.To maintain synchronization between Active and Standby nodes they both communicate with a group of demons called JournalNodes(JNs). If there any Namespace modifications done by Active name node logs a modification record to a majority of these present JNs.The standby node reads the edits from the JNs and continuously watches the changes in edit log from JNs. Standby node updates its own namespace of observes in edits every time.JNs are shared edits in presence of QJM.when failover happens, the Standby ensures that it has read all edits from JNs before it takes over the Active position. Standby acts as secondary name node because it performs all tasks done by secondary name node. So in HA configuration cluster no need of Secondary Namenode. Hope this helps you. @karthik nedunchezhiyan
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01-27-2017
10:54 AM
@Eric Lloyd HDP and HDF are two different services. We have to follow different installation procedures for both. HDP installation : http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4/bk_installing_manually_book/content/ch_getting_ready_chapter.html --> Runs on 8080 port with Ambari HDF installtion: https://docs.hortonworks.com/HDPDocuments/HDF1/HDF-1.1.1/bk_HDF_GettingStarted/content/downloading-and-installing-nifi.html --> Runs on port 9090 Vinod
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07-29-2016
06:58 AM
Thanks Artem Ervits,
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07-28-2016
06:32 AM
Can anyone please tell me the difference between deploying HDP sandbox 2.4 with Virtual Machine and Virtual Machines Classic option?
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Hortonworks Data Platform (HDP)
02-16-2016
12:59 PM
1 Kudo
How to get Smartsense id, custoemer id while configuring SmartSense?
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Apache Ambari
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Hortonworks SmartSense
02-15-2016
05:39 AM
1 Kudo
@Neeraj Sabharwal Thanks Neeraj for helping this out. It worked for me too. But ambari showing started but yet its getting stopped for me because of the following issue in log files. DBAccessorImpl:102 - Error while creating database accessor org.postgresql.util.PSQLException: FATAL: no pg_hba.conf entry for host "127.0.0.1", user "ambari", database "ambari", SSL off Could you help on this issue also please?
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02-10-2016
10:03 AM
1 Kudo
@Neeraj Sabharwal I am also doing couple of times. But couldn't get resolved till now. Thanks for the reply. But I tried Ambari 2.1.2.1, I got the issue as follows. https://community.hortonworks.com/questions/15495/amabari-server-212-setup-error-while-creating-data.html#comment-15540 Can you help with this error? Thanks in advance! Have a nice day!
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02-10-2016
09:47 AM
1 Kudo
@Neeraj Sabharwal Is this only way i.e.. by applying patch to rectify the bug or any other way to fix bug?
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02-10-2016
09:46 AM
1 Kudo
Ambari version - v2.2.0.0 from repo file -> Updates-ambari-2.2.0.0 OS - CentOS Linux release 7.2.1511 (Core) But in error log the issue shows as below. 10 Feb 2016 13:54:19,728 ERROR [main] DBAccessorImpl:102 - Error while creating database accessor
org.postgresql.util.PSQLException: FATAL: no pg_hba.conf entry for host "127.0.0.1", user "ambari", database "ambari", SSL off
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