Member since
09-15-2015
294
Posts
764
Kudos Received
81
Solutions
My Accepted Solutions
Title | Views | Posted |
---|---|---|
798 | 07-27-2017 04:12 PM | |
2234 | 06-29-2017 10:50 PM | |
1078 | 06-21-2017 06:29 PM | |
1131 | 06-20-2017 06:22 PM | |
889 | 06-16-2017 06:46 PM |
12-20-2017
10:51 PM
1 Kudo
Today the HDFS balancer doesn't balance disks within a DataNode This is a pretty known and talked about issue with HDFS balancer. See apache jira - https://issues.apache.org/jira/browse/HDFS-1312 The apache documentation is - https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSDiskbalancer.html This tracks and resolve this issue.
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07-27-2017
04:12 PM
5 Kudos
@ashutosh bajpai-Sorry to hear that your experience was not good. I would recommend for answers specific to your particular exam, please send email to certification@hortonworks.com
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06-29-2017
10:50 PM
12 Kudos
@Saurab Dahal - As in the other answers the change in hdfs-site.xml will only affect the newly created files with the new replication factor. If you want to change replication factor for already existing files. You can run the hdfs cli commands like below: hdfs dfs -setrep -w 1 /myfile
hdfs dfs -setrep -w 1 /mydir
Hope this helps !
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06-21-2017
08:32 PM
1 Kudo
Yes, that is correct
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06-21-2017
06:31 PM
2 Kudos
Ping @ssathish
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06-21-2017
06:29 PM
9 Kudos
You can simply run hdfs cli commands to delete objects on S3 hdfs dfs -rm -r -f -skipTrash s3a://S3_BUCKET_NAME/S3_PATH This however will only works if you have specified S3 properties (fs.s3a.access.key, fs.s3a.secret.key) in core-site.xml
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06-21-2017
06:15 PM
2 Kudos
Ping @Arpit Agarwal
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06-20-2017
06:45 PM
2 Kudos
Ping @Kshitij Badani
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06-20-2017
06:45 PM
2 Kudos
Ping @Kshitij Badani
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06-20-2017
06:22 PM
6 Kudos
@Kareem Amin - Sorry to hear that your experience was not good. There are few below threads related to your experience: https://community.hortonworks.com/questions/33690/hdpcd-exam-network-issues.html#answer-33724 https://community.hortonworks.com/questions/82013/hdpcd-spark-when-can-i-expect-result.html#answer-82024 Also, for answers specific to your particular exam, please send email to certification@hortonworks.com
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06-20-2017
04:59 AM
8 Kudos
The below post also talks about similar issue: https://community.hortonworks.com/questions/75377/zeppelin-livy-interpreter-not-working-with-kerbero.html Please see if this helps.
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06-16-2017
06:46 PM
3 Kudos
@mayki wogno - I think you accidentally posted the same question twice: https://community.hortonworks.com/questions/107715/nifi-130-getftp-read-timed-out.htm
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06-16-2017
06:46 PM
4 Kudos
@mayki wogno - I think you accidentally posted the same question twice: https://community.hortonworks.com/questions/107715/nifi-130-getftp-read-timed-out.htm
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06-16-2017
06:46 PM
2 Kudos
@mayki wogno - I think you accidentally posted the same question twice: https://community.hortonworks.com/questions/107715/nifi-130-getftp-read-timed-out.htm
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06-16-2017
06:42 PM
6 Kudos
There is currently no practice exam for the Spark exam. If you need experience writing Spark applications on HDP using Python or Scala, I recommend downloading the Sandbox and working through the Hortonworks Spark tutorials. Also below threads have good details: https://community.hortonworks.com/questions/45535/hdpcd-spark-environment.html https://community.hortonworks.com/questions/70180/hdpcd-spark-exam.html https://community.hortonworks.com/questions/64278/hdpcd-spark-certification.html
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06-16-2017
06:35 PM
2 Kudos
Ping @Raghav Kumar Gautam
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06-12-2017
09:02 PM
5 Kudos
@Ivan Majnaric - I think you accidentally posted the same question twice: https://community.hortonworks.com/questions/107268/yarn-threshold-error.html
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06-12-2017
09:01 PM
4 Kudos
@Ivan Majnaric- I think you accidentally posted the same question twice: https://community.hortonworks.com/questions/107268/yarn-threshold-error.html
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06-08-2017
08:44 PM
2 Kudos
Please see below post on how to remove old HDP version: https://community.hortonworks.com/questions/21876/how-to-remove-an-old-hdp-version.html
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06-08-2017
08:43 PM
7 Kudos
Below are couple of good blogs: https://elitedatascience.com/r-vs-python-for-data-science http://www.kdnuggets.com/2015/05/r-vs-python-data-science.html Go through these, and see if you can come to a conclusion. My preference is however Python.
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06-08-2017
08:27 PM
4 Kudos
@shivanand khobanna - I think you accidentally asked the same question twice: https://community.hortonworks.com/questions/106919/error-with-insert-statement-in-puthiveql-processor-1.html Can you please close this one.
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06-06-2017
03:50 PM
2 Kudos
@Xiong Duan - Looks like you accidentally posted the same question twice: https://community.hortonworks.com/questions/106117/hihow-to-make-hadoop-to-read-the-configuration-fil-1.html Can you please close this one
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06-02-2017
11:05 PM
2 Kudos
@Aneesh Ramadoss - I think you asked the same question twice: https://community.hortonworks.com/questions/105715/how-to-select-a-specific-aws-amisrhel-71-for-creat-1.html Can you please close this one
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06-02-2017
10:10 PM
3 Kudos
@Naveen Keshava - Please read the documentation related to Storage Connectors: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.1/bk_cloud-data-access/content/intro.html Using these you should be able to read / write data from S3 However, please note that this is a new feature released with HDP 2.6.1, so make sure to use the latest HDP version.
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06-02-2017
09:52 PM
10 Kudos
I have never seen Checkpoint/Backup node being used in practice and these should be considered deprecated. I recommend using NameNode HA which eliminates the single point of failure. More details in below post: https://community.hortonworks.com/questions/85184/checkpoint-node-vs-secondary-namenode.html
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06-02-2017
09:45 PM
3 Kudos
Can you please do ps -ef | grep namenode On the cluster, and see what all processes comes back. It looks like there is a Namenode process already running, and when you try to start that again it fails to start another one (which is the correct behavior). I will recommend to stop all the processes returned by the above command, and then restarting the Namenode again.
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06-02-2017
09:33 PM
8 Kudos
@Shyam Shaw - As @Dominika Bialek also mentioned, this feature was introduced in HDP 2.6.1 I have confirmed this with HDFS Development team and this is not part of HDP 2.5.3 Please upgrade your cluster to the latest HDP version (HDP 2.6.1) to use this feature. Hope this clarifies your issue.
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06-02-2017
09:26 PM
7 Kudos
@Pulak Nath - The questions will not change, as that is a sample exam intended for practice purposes. I will recommend to go through all the topics before appearing for the exam. Hope this clarifies!
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06-02-2017
08:46 PM
7 Kudos
Below posts might help: https://community.hortonworks.com/questions/63761/sqoop-import-to-hive-again-stroing-repeted-recorde.html https://community.hortonworks.com/questions/51508/sqoop-imported-more-records-than-source.html
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05-30-2017
07:50 PM
9 Kudos
Below are couple of posts which might help: https://community.hortonworks.com/articles/102728/installing-anaconda-python-on-hdp-cluster-using-cl.html https://community.hortonworks.com/articles/75551/installing-and-exploring-spark-20-with-jupyter-not.html
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