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04-19-2017
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02-16-2020
10:57 PM
Thank you for the answer. But i'm trying to make namenode ha architecture like Active, Standby, Standby Namenode in one namespace.
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02-16-2020
10:35 PM
In Hadoop 3.0, HDFS HA feature supports more than two namenodes. https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithNFS.html Does Ambari supports HDFS HA more than two namenodes?
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07-27-2018
07:40 AM
Thank you @Akhil S Naik. Your solution is works!
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07-26-2018
12:13 PM
This is full stack trace.. TypeError: Cannot read property 'join's null at new i (hostname:8088/ui2/assets/vendor.js:5598:40988) at l (hostname:8088/ui2/assets/vendor.js:5598:41338) at p (hostname:8088/ui2/assets/vendor.js:5598:42035) at Function.q [as guess] (hostname:8088/ui2/assets/vendor.js:5598:42235) at getDefaultTimezone (hostname:8088/ui2/assets/yarn-ui.js:366:445) at convertTimestampWithT (hostname:8088/ui2/assets/yarn-ui.js:366:656) at Object.timeStampToDate (hostname:8088/ui2/assets/yarn-ui.js:348:127) at Class.internalNormalizeSingleResponse (hostname:8088/ui2/assets/yarn-ui.js:287:73) at Class.<anonymous> (hostname:8088/ui2/assets/yarn-ui.js:288:2024) at Array.map (native)
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07-26-2018
12:03 PM
Unfortunately, an incognito window also displays a blank page.
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07-26-2018
11:50 AM
I was successfully install ambari 2.7v and hdp 3.0. But, When i connect to Resource Manager UI(v2), web browser shows a blank pages. In a chrome development tool, i found an error. "Uncaught TypeError: Cannot read property 'join' of null" TypeError: Cannot read property 'join's null at new i (http://hostname:8088/ui2/assets/vendor.js:5598:40988) at l (http://hostname:8088/ui2/assets/vendor.js:5598:41338) ... TypeError: Cannot read property '0' of undefined at Class.error (yarn-ui.js:268) at Object.triggerEvent (vendor.js:1800) ... I tested it in a browser like Chrome, Internet Explorer, Opera, i got a same blank pages. But, I tested it in Firefox, Resource Manager UI(v2) works fine. What is problem? How can i fix this problem?
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Cloudera Manager
06-18-2018
06:21 AM
When i was querying to hive using mr execution engine, some containers use more than 100% cpu. I was see from 50% cpu usage up to 1000% cpu usage. (using top command on each node manager host) I don't understand why one container uses more than 100% cpu. is Map or Reduce working multithreaded?
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Apache Hadoop
02-27-2018
12:06 AM
Thank you for your answer @Vipin Rather. But, I am concerned ranger load balancer die. If server contains ranger load balancer dies, what can i do?
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02-26-2018
06:25 AM
How can I prepare for Ranger Server failure? If the server that has ranger admin server got critical fault, i can't changes authorization policy until restore ranger admin server. So, i need to restore, backup, ha and etc.. options. First, i consider ha option. Ranger HA uses load balancer in front of two ranger admin server. I think that it is same situation in server level failure. It just moved single point of failure from ranger admin server to load balancer. Even if i construct ranger admin load balancer to another server, all services of using ranger plugin need to restart. That is very very hard big and commercial cluster. Second, i consider reinstall ranger option. It follows working sequences in the below. Ranger plugin disable -> service of using ranger plugin restart -> install ranger to another server -> Ranger plugin enable It also needs restarting services. I don't understand why can't add comma separated url to ranger.plugin.hdfs.policy.source.rest.url, configuration. I think since ranger admin does not have huge loads, so ranger admin does not need load balancer. Return to first, How can I prepare for Ranger Server failure?
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Apache Ranger
10-13-2017
12:59 AM
I'm waiting for new release of HDP. When is the next release of HDP? (current HDP version : 2.6.2)
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Hortonworks Data Platform (HDP)
05-19-2017
08:40 AM
My cluster uses capacity queue, and completed setting of allocation resources each queue. But, when some users apply job with options "set tez.queue.name=abc" or "set mapreduce.queue.name=def", then queue name "abc" and "def" are automatically created in ResourceManager. That queue can allocate from zero-memory, zero-vcore up to maximum-memory, maximum-vcore in my cluster resources. I do not want that. How can i prevent automatically creation of queue by hive?
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Apache Hive
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Cloudera Manager
05-08-2017
09:09 AM
Now, resource manager writes up to 10 log files. How to increase the number of resource manager's log files?
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Apache Ambari
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Cloudera Manager