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[expand - 1 more] - RE: Trusted-realm vs default-realm kerberos issue - Hadoop - [mail # user]
...Michael and Alex, thanks for the replies.The setup is indeed what Michael suggested, that the cluster KDC trusts the enterprise AD (which serves as a KDC also).We did a lot more digging arou...
   Author: John Lilley, 2015-04-19, 20:33
[expand - 1 more] - Error in YARN localization with Active Directory user -- inconsistent directory name escapement - Hadoop - [mail # user]
...We have a Cloudera 5.3 cluster running on CentOS6 that is Kerberos-enabled and uses an external AD domain controller for the KDC.  We are able to authenticate, browse HDFS, etc.  H...
   Author: John Lilley, 2015-04-17, 19:01
JNI native-method warning in HDP 2.0 - Hadoop - [mail # user]
...We are seeing a warning deep in HDFS code, I was wondering if anyone knows of this or if a JIRA has been filed or fixed?  Searching on the warning text didn't crop up anything.  It...
   Author: John Lilley, 2014-10-16, 19:06
[expand - 1 more] - RE: Issue with Hadoop/Kerberos security as client - Hadoop - [mail # user]
...Follow-up: problem seem to be solved.The issue is purely a JNI issue and actually doesn't have anything to do with security per se.  Calling vm->AttachCurrentThread() sets the contex...
   Author: John Lilley, 2014-09-18, 22:52
[expand - 1 more] - RE: How can I increase the speed balancing? - Hadoop - [mail # user]
...I have also found that neitherdfsadmin - setBalanacerBandwidthnordfs.datanode.balance.bandwidthPerSec’have any notable effect on apparent balancer rate.  This is on Hadoop 2.2.0johnFrom...
   Author: John Lilley, 2014-09-03, 14:54
RE: HDFS balance - Hadoop - [mail # user]
...Can you run the load from an "edge node" that is not a DataNode?johnJohn LilleyChief Architect, RedPoint Global Inc.1515 Walnut Street | Suite 300 | Boulder, CO 80302T: +1 303 541 1516  | M:...
   Author: John Lilley, 2014-09-03, 14:51
[expand - 2 more] - YARN userapp cache lifetime: can't find core dump - Hadoop - [mail # user]
...We have a YARN task that is core-dumping, and the JVM error log says:# Core dump written. Default location: /data2/hadoop/yarn/local/usercache/jlilley/appcache/application_1405724043176_2453...
   Author: John Lilley, 2014-09-02, 20:02
[expand - 2 more] - winutils and security - Hadoop - [mail # user]
...Up to this point, we've been able to run as a Hadoop client application (HDFS + YARN) from Windows without winutils.exe, despite always seeing messages complaining about it in the logs. &nbs...
   Author: John Lilley, 2014-08-23, 20:41
RE: Issues with documentation on YARN - Hadoop - [mail # user]
...The only way we've found to write an application master is by example. However, the distributed-shell example in 2.2 was not very good; it is much improved in 2.4.  I would start with t...
   Author: John Lilley, 2014-07-27, 20:44
[expand - 1 more] - HBase metadata - Hadoop - [mail # user]
...Greetings!We would like to support HBase in a general manner, having our software connect to any HBase table and read/write it in a row-oriented fashion.  However, as we explore HBase, ...
   Author: John Lilley, 2014-07-08, 16:06
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB