MR development – how to get started
hello i have downloaded the single node sandbox and i have working on Linux using virtualbox what i would like to know is: how can i setup a development environment? i am thinking that somehow i can...
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View ArticleReply To: date field gave result as a NULL
Could you try a couple of things to try to help pinpoint the source of the problem? 1. Can you run an explain of that query and paste the results here? explain select * from part_test_date where...
View Articlehive connection refused
hi all, i’m currently new using hortonworks and i want to ask a question. when i’m using hive, i did a query for ‘show databases;’ and ‘show tables;’ and it gave me list databases and list tables....
View ArticleHive view is taking too much time to retrive the data
I have created 2 tables with ORC file format. I build one custom view on that tables. But when I retrive the data from that view it takes too much time. Simillar view is created in some another...
View ArticleReply To: HDP 2.1.5.0 Installation Failed on Windows Server 2012 R2
Update, Anyone to help me ? thanks.
View ArticleReply To: How to restart hadoop service in HDP sandbox
As the hadoop (root) user you can restart the HDP services stack via the Hortonworks Sandbox startup_script service. Make your configuration changes and then issue the following command: # service...
View ArticleReply To: Sandbox 2.1 ODBC Not Working
I am also having this issue. Whenever I try to view the data on excel 2011 on mac I see message “no records returned”. I have already given grant to “hue”. Thanks.
View ArticleReply To: The filesystem under path '/' has [N] CORRUPT files
Hi Margus, Can you execute hdfs fsck / -openforwrite and verify what output you get then? Regards, Robert
View ArticleReply To: The filesystem under path '/' has [N] CORRUPT files
… /user/hbase/data/WALs/bigdata3,60020,1413208011810/bigdata3%2C60020%2C1413208011810.1413254816565: MISSING 1 blocks of total size 9...
View ArticleSecurity cluster Application page like add log in mechanism
Hi everyone, I was developing a hadoop web application. One thing bothers me about the security is the cluster application management page, e.g. XXX:8088/cluster. If anyone any access the page, then...
View ArticleReply To: The filesystem under path '/' has [N] CORRUPT files
Hi Margus, Looks like you have 6 corrupt files, possibly all of them due to missing a block each. I would investigate why those blocks are missing. For instance, are all the datanodes up? Are all the...
View ArticleReply To: The filesystem under path '/' has [N] CORRUPT files
Yes all six datanode are up. The reason why problem arise I have tested different scenarios – killed namenodes (I have namenode HA) Formated joranlnodes and many hardcore tests. Question is how can I...
View ArticleReply To: Security cluster Application page like add log in mechanism
Hi Zelin For Hadoop security, you have to Kerberize your environment. Once you have done that, you can have your service web application to require Kerberos authentication. Thanks Bosco
View ArticleOutOfMemoryError: Java heap space error when starting hive
Hello, I am following the “manual rpm” installation instructions for Ubuntu 12.0.4 and am stuck on the instructions to validate the hive installation...
View ArticleReply To: The filesystem under path '/' has [N] CORRUPT files
I just deleted thous six corrupted files. hadoop fsck / -openforwrite Total size: 172988470041 B Total dirs: 2601 Total files: 3086 Total symlinks: 0 Total blocks (validated): 4729 (avg. block size...
View ArticleReply To: Security cluster Application page like add log in mechanism
Hi Don, Thanks for replying. I have tried Kerberize before. I did something like add some configuration in the core-site.xml file. It doesn’t seem to work so I go for file permission method in hdfs....
View ArticleBackup for Hadoop
Hi everyone, Is there any effective way or considerate way to back up hive or say hadoop? I searched a little bit but couldn’t find anything useful. Any suggestions? Great thanks.
View ArticleReply To: Cannot run any pig scripts from Hue
Hi Arthur, How do you go about adding the slf4j-api jar to hdfs:///apps/webhcat/hive.tar.gz? Thank you,
View ArticlePig script runnung from hue feeze
Hello. Pig script start succsesfull. Job created and send keep alive heartbeat. And nothing more. Log: 2014-10-15 14:34:28,858 INFO [pool-5-thread-2-EventThread] org.apache.zookeeper.ClientCnxn:...
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