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[HDFS-2373] Commands using webhdfs and hftp print unnecessary debug information on the console with security enabled - HDFS - [issue]
...run an hdfs command using either hftp or webhdfs and it prints the following line to the console (system out)Retrieving token from: https://NN_HOST:50470/getDelegationTokenProbably in the co...
http://issues.apache.org/jira/browse/HDFS-2373    Author: Arpit Gupta, 2015-03-16, 20:44
[HDFS-5322] HDFS delegation token not found in cache errors seen on secure HA clusters - HDFS - [issue]
...While running HA tests we have seen issues were we see HDFS delegation token not found in cache errors causing jobs running to fail.at org.apache.hadoop.security.UserGroupInformation.doAs(Us...
http://issues.apache.org/jira/browse/HDFS-5322    Author: Arpit Gupta, 2015-02-27, 18:46
[HDFS-7340] make rollingUpgrade start/finalize idempotent - HDFS - [issue]
...I was running this on a HA cluster with dfs.client.test.drop.namenode.response.number set to 1. So the first request goes through but the response is dropped. Which then causes another reque...
http://issues.apache.org/jira/browse/HDFS-7340    Author: Arpit Gupta, 2014-11-05, 15:15
[HDFS-7305] NPE seen in wbhdfs FS while running SLive - HDFS - [issue]
...2014-10-23 10:22:49,066 WARN [main] org.apache.hadoop.mapred.Task: Task status: "Failed at running due to java.lang.NullPointerException at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.valid...
http://issues.apache.org/jira/browse/HDFS-7305    Author: Arpit Gupta, 2014-10-30, 15:17
[HDFS-4594] WebHDFS open sets Content-Length header to what is specified by length parameter rather than how much data is actually returned. - HDFS - [issue]
...This was noticed on 2.0.3 alphaLets say we have a file of length xWe make an webhdfs open call specifying length=x+1The response of the call redirected to the datanode sets the content lengt...
http://issues.apache.org/jira/browse/HDFS-4594    Author: Arpit Gupta, 2014-09-04, 00:49
[HDFS-5132] Deadlock in NameNode between SafeModeMonitor#run and DatanodeManager#handleHeartbeat - HDFS - [issue]
...While running nn load generator with 15 threads for 20 mins the standby namenode deadlocked....
http://issues.apache.org/jira/browse/HDFS-5132    Author: Arpit Gupta, 2014-09-04, 00:49
[HDFS-4105] the SPNEGO user for secondary namenode should use the web keytab - HDFS - [issue]
...This is similar to HDFS-3466 where we made sure the namenode checks for the web keytab before it uses the namenode keytab.The same needs to be done for secondary namenode as well.String http...
http://issues.apache.org/jira/browse/HDFS-4105    Author: Arpit Gupta, 2014-09-04, 00:06
Re: Updates on migration to git - HDFS - [mail # dev]
...some of this info is herehttps://git-wip-us.apache.org/On Mon, Aug 25, 2014 at 3:45 PM, Karthik Kambatla wrote:CONFIDENTIALITY NOTICENOTICE: This message is intended for the use of the indiv...
   Author: Arpit Gupta, 2014-08-25, 22:53
[HDFS-6715] webhdfs wont fail over when it gets java.io.IOException: Namenode is in startup mode - HDFS - [issue]
...Noticed in our HA testing when we run MR job with webhdfs file system we some times run into 2014-04-17 05:08:06,346 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.j...
http://issues.apache.org/jira/browse/HDFS-6715    Author: Arpit Gupta, 2014-07-25, 15:00
[HDFS-6245] datanode fails to start with a bad disk even when failed volumes is set - HDFS - [issue]
...Data node startup failed even when failed volumes was  set. Had to remove the bad disk from the config to get it to boot....
http://issues.apache.org/jira/browse/HDFS-6245    Author: Arpit Gupta, 2014-06-30, 09:18
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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