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[HDFS-3367] WebHDFS doesn't use the logged in user when opening connections - HDFS - [issue]
...Something along the lines ofUserGroupInformation.loginUserFromKeytab(<blah blah>)Filesystem fs = FileSystem.get(new URI("webhdfs://blah"), conf)doesn't work as webhdfs doesn't use the ...
http://issues.apache.org/jira/browse/HDFS-3367    Author: Jakob Homan, 2013-03-15, 13:20
[HDFS-2617] Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution - HDFS - [issue]
...The current approach to secure and authenticate nn web services is based on Kerberized SSL and was developed when a SPNEGO solution wasn't available. Now that we have one, we can get rid of ...
http://issues.apache.org/jira/browse/HDFS-2617    Author: Jakob Homan, 2012-09-28, 04:26
[HDFS-3768] Exception in TestJettyHelper is incorrect - HDFS - [issue]
...hadoop-hdfs-project/hadoop-hdfs-httpfs/src/test/java/org/apache/hadoop/test/TestJettyHelper.java:80throw new RuntimeException("Could not stop embedded servlet container, " + ex.getMessage(),...
http://issues.apache.org/jira/browse/HDFS-3768    Author: Jakob Homan, 2012-08-09, 13:56
Re: Checkpoint Woes - HDFS - [mail # user]
...=-31:1318804155:0:1328129935000:1328129628242 Have you defined your secondary namenode address?  The 2NN is telling the NN to pull the merged image from http://0.0.0.0.0:50090.   O...
   Author: Jakob Homan, 2012-02-01, 21:27
Re: When rmr and rm strike - HDFS - [mail # user]
...files that have been rm'ed but not yet expunged are stored in each user's .Trash folder within their home directory.   This is the safeguard against accidentally deleting files; adding ...
   Author: Jakob Homan, 2011-06-09, 11:05
Re: Branch for HDFS-1073 and related work - HDFS - [mail # dev]
...Doing this work on a branch makes sense.  +1.  However, the patches that have been committed so far required extensive review and revision, and in one case, an addendum patch. Addi...
   Author: Jakob Homan, 2011-03-28, 23:39
Re: Secondary Namenode doCheckpoint, FileNotFoundException - HDFS - [mail # user]
...Is the 2NN reachable at http://10.1.1.5:50090? This is the addr the NN is being told to grab the merged image from.  There can be problems with VIPs, etc. if this address is not reachab...
   Author: Jakob Homan, 2011-01-06, 22:16
Re: Changes to FSImage/FSEditLog - HDFS - [mail # dev]
...Glancing at 1473, it seems reasonable, but of course should get a  thorough review.  HDFS-1465 will impact and essentially replace all the  saving/loading code, so whether the...
   Author: Jakob Homan, 2010-11-18, 21:34
Re: HDFS file disappeared - HDFS - [mail # user]
...>Would be great if someone wrote some tools that, given a block ID, tracked  >the life of the file that contained it (including renames of containing  > dirs, etc). Should...
   Author: Jakob Homan, 2010-11-12, 00:38
HDFS-1150: Comment and review - HDFS - [mail # dev]
...HDFS-1150 (https://issues.apache.org/jira/browse/Hdfs-1150), part of the  security initiative, is a rather big change to the way Datanodes are  started in a secure environment and ...
   Author: Jakob Homan, 2010-05-14, 23:25
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NEW: Monitor These Apps!
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