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05-18-2020
08:42 AM
@buddelflinktier - How did you get the hbck2 tool? Did you build it from source code?
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05-13-2020
08:58 AM
Hi Can someone let me know from where I can obtain the hbck2 tool for CDH 6.3.2? Thanks,
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Apache HBase
03-25-2020
09:24 PM
HI Can someone let me know if CDH 5.15 and CDH 5.16 is supported on Ubuntu 18? The below doc does not mention anything about Ubuntu 18 so just confirming https://docs.cloudera.com/documentation/enterprise/release-notes/topics/rn_consolidated_pcm.html#c516_supported_os Thanks,
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01-08-2020
11:12 PM
Anyone any thoughts on my below query @tuk wrote: Is there any way by which an Unmanaged 5.x cluster can move to CDH 6.x (may be adding it in Cloudera Manager and then moving to 6.x)?
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10-19-2019
07:21 PM
Thanks for replying. Do you know if it is going to be supported in future or not?
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10-08-2019
08:14 AM
Now CDH 6.2 supports Ubuntu 18.40. Will CDH 5 also going to support Ubuntu 18.04?
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08-20-2019
04:40 AM
The link https://community.mapr.com/docs/DOC-1215 is not working now.
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08-19-2019
10:47 PM
I am using CDH 5.16.1 and I hit the issue HDFS-8298 as discussed in the below link
https://issues.apache.org/jira/browse/HDFS-8298
Can someone let me know if this is yet fixed in any of the CDH versions?
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Cloudera Manager
06-12-2019
05:05 AM
Thanks @SidAhuja . Is there any way by which an Unmanaged 5.x cluster can move to CDH 6.x (may be adding it in Cloudera Manager and then moving to 6.x)?
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02-27-2019
07:42 PM
Any thoughts on my previous query can someone let me know how to upgrade an unmanaged cluster to 6.1 from 5.16?
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01-31-2019
01:29 AM
How to upgrade an unmanaged cluster to 6.1 from 5.16 ? I am not able to locate any docs to upgrade unmanaged cluster (running 5.16) via command line like the one below for 5.15 https://www.cloudera.com/documentation/enterprise/5-15-x/topics/cdh_ig_upgrade_command_line.html
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01-31-2019
01:26 AM
Cross-posting from stackoverflow :- Can someone let me know how can we upgrade an unmanaged CDH Cluster from 5.16 to 6.1? I am not able to locate any docs to upgrade unmanaged cluster (running 5.16) via command line like the one below for 5.15 https://www.cloudera.com/documentation/enterprise/5-15-x/topics/cdh_ig_upgrade_command_line.html Can someone point me to the corresponding doc for 6.1?
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CDH Manual Installation
01-29-2019
04:03 AM
I am not able to locate any docs to upgrade unmanaged cluster via command line like the one below for 5.15 https://www.cloudera.com/documentation/enterprise/5-15-x/topics/cdh_ig_upgrade_command_line.html Can someone point me to the corresponding doc for 6.1 ?
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01-23-2019
09:32 AM
The below link is still not providing me the instruction to upgrade to 6.1 even if I select Current CDH Version as 5.16. https://www.cloudera.com/documentation/enterprise/upgrade/topics/ug_cdh_upgrade_before.html#ug_cdh_upgrade_before
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01-19-2019
07:00 AM
Is upgrade to 6.1 supported from 5.15 ? The below link is not showing any option to upgrade to 6.1 from 5.15 https://www.cloudera.com/documentation/enterprise/upgrade/topics/ug_cdh_upgrade_before.html#ug_cdh_upgrade_before
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12-07-2018
05:51 AM
The documentation states it is not possible to upgrade to CDH 6.0.0 from 5.15. CDH 6.0.1 is released is it possible to upgrade to 6.0.1 from 5.15? If not then what is the upgrade path for moving to CDH 6.0.1 from 5.15 ? CDH 5.15 to CDH 5.16.1 and then CDH 6.0.1? Will the future CDH 6 version support upgrading directly from 5.15 ?
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06-30-2018
09:47 AM
I am interested in pursuing the cloudera on demand training for Apache Hbase. So I was going through the course outline. https://university.cloudera.com/static/pdfs/Cloudera-Training-for-Apache-HBase.pdf The above pdf link talks about Hbase Certification. HBase Certification Upon completion of the course, attendees are encouraged to continue their study and register for the Cloudera Certified Specialist in Apache HBase (CCSHB) exam. Certification is a great differentiator; it helps establish you as a leader in the field, providing employers and customers with tangible evidence of your expertise. But I am not able to find any more details about the CCSHB exam in cloudera website. Can someone point me to the link which provides more details about the CCSHB exam?
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Certification
06-20-2018
11:36 PM
CDH 15 is released as mentioned in the below link http://community.cloudera.com/t5/Community-News-Release/ANNOUNCE-Cloudera-Enterprise-5-15-is-Now-Available/m-p/69154#M233 But in the maven central repo I am not able to see any hbase-client specific to CDH 15. The latest available is 5.14.2. https://mvnrepository.com/artifact/org.apache.hbase/hbase-client?repo=cloudera Are we supposed to use 5.14.2 clients with CDH 15 ? I could not find anything related to this in documentation.
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HBase
12-21-2017
10:39 AM
@csguna - As suggested here I am trying to do a rolling upgrade from command line. But on trying to upgrade `hadoop-yarn-resourcemanager` it is upgrading other CDH components as well support@platform1:~$ sudo apt-get install hadoop-yarn-resourcemanager
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
hadoop hadoop-0.20-mapreduce hadoop-client hadoop-conf-pseudo hadoop-hdfs
hadoop-hdfs-datanode hadoop-hdfs-journalnode hadoop-hdfs-namenode
hadoop-hdfs-secondarynamenode hadoop-hdfs-zkfc hadoop-mapreduce
hadoop-mapreduce-historyserver hadoop-yarn hadoop-yarn-nodemanager
The following packages will be upgraded:
hadoop hadoop-0.20-mapreduce hadoop-client hadoop-conf-pseudo hadoop-hdfs
hadoop-hdfs-datanode hadoop-hdfs-journalnode hadoop-hdfs-namenode
hadoop-hdfs-secondarynamenode hadoop-hdfs-zkfc hadoop-mapreduce
hadoop-mapreduce-historyserver hadoop-yarn hadoop-yarn-nodemanager
hadoop-yarn-resourcemanager
15 upgraded, 0 newly installed, 0 to remove and 16 not upgraded.
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12-20-2017
01:17 AM
@csguna - Can you let me know if it is possible to upgrade individual CDH components via "1-Click Install"? For example let's say I want to upgrade only ` hadoop-hdfs-datanode` in a server. If I am doing `sudo apt-get install hadoop-hdfs-datanode` it is updating other CDH components also in that node (like resource-manager, node-manager, etc)
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12-13-2017
07:19 AM
Is `hadoop-yarn-api` backward compatible? I can find this blog post which talks about `hbase-client` api. Does the same thiing old for `hadoop-yarn-api` as well for `2.6.0-cdh5.13.0` and `2.6.0-cdh5.7.0` ? < dependency > < groupId > org.apache.hadoop </ groupId > < artifactId > hadoop-yarn-api </ artifactId > < version >2.6.0-cdh5.13.0 </ version > </ dependency >
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YARN
12-08-2017
05:19 AM
Thanks @csguna for replying. I am trying this on a test set-up. I am not having Cloudera Enterprise license. Can you also let me know since this is a minor version upgrade from 5.7 to 5.13. Can I just upgrade the services in any random order? For example let's say I have upgraded the Secondary Name Node and some data node to the latest 5.13. Will the updated node will be able to talk with the old 5.7 ? Is the latest 5.13 fully backward compatible with 5.7? Cluster downtime is not an issue but eventually when all the node is upgrade will the cluster be restored to normal. The above question may sound little weird but in summary I am asking this because the legacy set-up in which I am working right now does not have any centralized mechanism to control upgrade secondary NN first then primary & so on.
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12-06-2017
10:38 PM
In HDFS rolling upgrade page at a high level I am seeing the steps mentioned like below
hdfs dfsadmin -rollingUpgrade prepare
Upgrade standby NN2 and start NN2 with hdfs dfsadmin -rollingUpgrade started
Shutdown, upgrade NN1 and start NN1 with hdfs dfsadmin -rollingUpgrade started
But in cloudera documentation of Hadoop to prepare the cluster for upgrade it is just saying to enter NN in safemode & save namespace
sudo -u hdfs hdfs dfsadmin -safemode enter
sudo -u hdfs hdfs dfsadmin -saveNamespace
Can some one let me know why there is a difference in the above steps?
Is it just sufficient to enter in -safemode before doing the upgrade?
If yes what does -rollingUpgrade started do then?
In the cloudera documentation I am not seeing anything about -safemode leave. When it will leave the safemode? Will it auto leave the safemode ?
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CDH Manual Installation
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HDFS
12-06-2017
11:06 AM
Anyone any thoughts?
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