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[HDFS-6666] Abort NameNode and DataNode startup if security is enabled but block access token is not enabled. - HDFS - [issue]
...Currently, if security is enabled by setting hadoop.security.authentication to kerberos, but HDFS block access tokens are disabled by setting dfs.block.access.token.enable to false (which is...
http://issues.apache.org/jira/browse/HDFS-6666    Author: Chris Nauroth, 2015-04-01, 04:53
[HDFS-7988] Replace usage of ExactSizeInputStream with LimitInputStream. - HDFS - [issue]
...HDFS has a class named ExactSizeInputStream used in the protobuf translation layer.  This class wraps another InputStream, but constraints the readable bytes to a specified length. &nbs...
http://issues.apache.org/jira/browse/HDFS-7988    Author: Chris Nauroth, 2015-03-25, 10:53
[HDFS-7833] DataNode reconfiguration does not recalculate valid volumes required, based on configured failed volumes tolerated. - HDFS - [issue]
...DataNode reconfiguration never recalculates FsDatasetImpl#validVolsRequired.  This may cause incorrect behavior of the dfs.datanode.failed.volumes.tolerated property if reconfiguration ...
http://issues.apache.org/jira/browse/HDFS-7833    Author: Chris Nauroth, 2015-03-20, 06:07
[HDFS-5640] Add snapshot methods to FileContext. - HDFS - [issue]
...Currently, methods related to HDFS snapshots are defined on FileSystem.  For feature parity, these methods need to be added to FileContext.  This would also require updating Abstra...
http://issues.apache.org/jira/browse/HDFS-5640    Author: Chris Nauroth, 2015-03-19, 18:00
Re: upstream jenkins build broken? - HDFS - [mail # dev]
...+1 for the git clean command.HDFS-7917 still might be valuable for enabling us to run a few unit testson Windows that are currently skipped.  Let's please keep it open, butit's less urg...
   Author: Chris Nauroth, 2015-03-16, 19:19
[HDFS-7604] Track and display failed DataNode storage locations in NameNode. - HDFS - [issue]
...During heartbeats, the DataNode can report a list of its storage locations that have been taken out of service due to failure (such as due to a bad disk or a permissions problem).  The ...
http://issues.apache.org/jira/browse/HDFS-7604    Author: Chris Nauroth, 2015-03-06, 18:44
[HDFS-7879] hdfs.dll does not export functions of the public libhdfs API - HDFS - [issue]
...HDFS-573 enabled libhdfs to be built for Windows.  This did not include marking the public API functions for export in hdfs.dll though, effectively making dynamic linking scenarios impo...
http://issues.apache.org/jira/browse/HDFS-7879    Author: Chris Nauroth, 2015-03-05, 15:50
Re: How to build and run my own test code of HDFS - HDFS - [mail # dev]
...Hadoop requires that the test class name start with "Test".  Inhadoop-project/pom.xml, we override the default Surefire include pattern:  **/Test*.javaChris NaurothHortonworks...
   Author: Chris Nauroth, 2015-02-26, 00:45
Re: Code example of Simple Authenication using Hadoop - HDFS - [mail # dev]
...Hello Rahul,Hadoop processes, including the map and reduce tasks of a MapReduce job,handle Kerberos authentication transparently after the user submitting thejob runs kinit to obtain a ticke...
   Author: Chris Nauroth, 2015-02-23, 18:55
[HDFS-7714] Simultaneous restart of HA NameNodes and DataNode can cause DataNode to register successfully with only one NameNode. - HDFS - [issue]
...In an HA deployment, DataNodes must register with both NameNodes and send periodic heartbeats and block reports to both.  However, if NameNodes and DataNodes are restarted simultaneousl...
http://issues.apache.org/jira/browse/HDFS-7714    Author: Chris Nauroth, 2015-02-17, 08:12
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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