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[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
[HDFS-5147] Certain dfsadmin commands such as safemode do not interact with the active namenode in ha setup - HDFS - [issue]
...There are certain commands in dfsadmin return the status of the first namenode specified in the configs rather than interacting with the active namenodeFor example. Issuehdfs dfsadmin -safem...
http://issues.apache.org/jira/browse/HDFS-5147    Author: Arpit Gupta, 2014-06-12, 10:03
[HDFS-6354] NN startup does not fail when it fails to login with the spnego principal - HDFS - [issue]
...I have noticed where the NN startup did not report any issues the login fails because either the keytab is wrong or the principal does not exist etc. This can be mis leading and lead to auth...
http://issues.apache.org/jira/browse/HDFS-6354    Author: Arpit Gupta, 2014-05-27, 14:28
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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