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[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
[HDFS-6127] WebHDFS tokens cannot be renewed in HA setup - HDFS - [issue]
...TokenAspect class assumes that the service name of the token is alway a host-ip pair. In HA setup, however, the service name becomes the name service id, which breaks the assumption. As a re...
http://issues.apache.org/jira/browse/HDFS-6127    Author: Arpit Gupta, 2014-04-10, 14:12
[HDFS-6100] DataNodeWebHdfsMethods does not failover in HA mode - HDFS - [issue]
...In DataNodeWebHdfsMethods, the code creates a DFSClient to connect to the NN, so that it can access the files in the cluster. DataNodeWebHdfsMethods relies on the address passed in the URL t...
http://issues.apache.org/jira/browse/HDFS-6100    Author: Arpit Gupta, 2014-03-21, 21:20
[HDFS-6089] Standby NN while transitioning to active throws a connection refused error when the prior active NN process is suspended - HDFS - [issue]
...The following scenario was tested: Determine Active NN and suspend the process (kill -19) Wait about 60s to let the standby transition to active Get the service state for nn1 and nn2 and mak...
http://issues.apache.org/jira/browse/HDFS-6089    Author: Arpit Gupta, 2014-03-21, 15:06
[HDFS-6077] running slive with webhdfs on secure HA cluster fails with unkown host exception - HDFS - [issue]
...SliveTest fails with following.  See the comment for more logs.SliveTest: Unable to run job due to error:java.lang.IllegalArgumentException: java.net.UnknownHostException: ha-2-secure&n...
http://issues.apache.org/jira/browse/HDFS-6077    Author: Arpit Gupta, 2014-03-11, 14:59
[HDFS-5653] Log namenode hostname in various exceptions being thrown in a HA setup - HDFS - [issue]
...In a HA setup any time we see an exception such as safemode or namenode in standby etc we dont know which namenode it came from. The user has to go to the logs of the namenode and determine ...
http://issues.apache.org/jira/browse/HDFS-5653    Author: Arpit Gupta, 2014-03-05, 22:25
confirm expected HA behavior - HDFS - [mail # dev]
...HiI have a scenario where i am trying to test how HDFS HA works in case of network issues. I used iptables to block requests to the rpc port 8020 in order to simulate that. Below is the some...
   Author: Arpit Gupta, 2014-02-05, 22:28
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