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Re: YARN tasks and child processes - HDFS - [mail # user]
...Nopes! The node manager kills the entire process tree when the task reports that it is done. Now if you were able to figure out a way for one of the children to break out of the process tree...
   Author: Ravi Prakash, 2013-07-02, 15:55
Re: intermediate results files - HDFS - [mail # user]
...Hi John! If your block is going to be replicated to three nodes, then in the default block placement policy, 2 of them will be on the same rack, and a third one will be on a different rack. ...
   Author: Ravi Prakash, 2013-07-02, 15:48
[expand - 1 more] - Re: Job end notification does not always work (Hadoop 2.x) - HDFS - [mail # user]
...Hi Alejandro,  Thanks for your reply! I was thinking more along the lines Prashant suggested i.e. a failure during init() should still trigger an attempt to notify (by the AM). But now ...
   Author: Ravi Prakash, 2013-06-23, 13:30
Why is FileSystem.createNonRecursive deprecated? - HDFS - [mail # dev]
...Hi folks,  I am trying to fix MAPREDUCE-5317. I noticed that the only way through FileSystem to NOT recursively create directories is through the deprecated method   @deprecated AP...
   Author: Ravi Prakash, 2013-06-11, 22:18
[HDFS-3627] OfflineImageViewer oiv Indented processor prints out the Java class name in the DELEGATION_KEY field - HDFS - [issue]
...Instead of the contents of the delegation key this is printed outDELEGATION_KEY = org.apache.hadoop.security.token.delegation.DelegationKey@1e2ca7    DELEGATION_KEY = org.apac...
http://issues.apache.org/jira/browse/HDFS-3627    Author: Ravi Prakash, 2013-03-22, 23:51
[HDFS-2119] "hdfs version" should print out information similar to what "hadoop version" prints out - HDFS - [issue]
...Implement version in hdfs CLI...
http://issues.apache.org/jira/browse/HDFS-2119    Author: Ravi Prakash, 2013-03-19, 22:39
[HDFS-4498] Investigate possible performance benefits by using protobuf option optimize_for = SPEED - HDFS - [issue]
...The default is to optimize for code size : https://groups.google.com/forum/?fromgroups=#!topic/protobuf/OtL7Bb4NiRIHas anyone ever investigated how much effort protobuf de/serialization take...
http://issues.apache.org/jira/browse/HDFS-4498    Author: Ravi Prakash, 2013-02-13, 18:57
[HDFS-3321] Error message for insufficient data nodes to come out of safemode is wrong. - HDFS - [issue]
...Courtesy Andreina,When "dfs.namenode.safemode.min.datanodes" is configured to nSo namenode will be in safemode until n DN are registered with the namenode .But in UI it displays that n+1 dat...
http://issues.apache.org/jira/browse/HDFS-3321    Author: Ravi Prakash, 2012-09-07, 22:02
[HDFS-3135] Build a war file for HttpFS instead of packaging the server (tomcat) along with the application. - HDFS - [issue]
...There are several reason why web applications should not be packaged along with the server that is expected to serve them. For one not all organisations use vanilla tomcat. There are other r...
http://issues.apache.org/jira/browse/HDFS-3135    Author: Ravi Prakash, 2012-08-31, 04:52
[HDFS-3558] OfflineImageViewer throws an NPE - HDFS - [issue]
...Courtesy Mithun RadhakrishnanException in thread "main" java.lang.NullPointerException at org.apache.hadoop.security.authentication.util.KerberosName.getShortName(KerberosName.java:371) at o...
http://issues.apache.org/jira/browse/HDFS-3558    Author: Ravi Prakash, 2012-07-10, 18:31
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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