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[HDFS-173] Recursively deleting a directory with millions of files makes NameNode unresponsive for other commands until the deletion completes - HDFS - [issue]
...Delete a directory with millions of files. This could take several minutes (observed 12 mins for 9 million files). While the operation is in progress FSNamesystem lock is held and the reques...
http://issues.apache.org/jira/browse/HDFS-173    Author: Suresh Srinivas, 2012-08-15, 02:38
Re: Hadoop WebUI - HDFS - [mail # dev]
...Clement,  To get the details related to how to contribute - see http://wiki.apache.org/hadoop/HowToContribute.  UI is simple because it serves the purpose. More sophisticated UI fo...
   Author: Suresh Srinivas, 2012-08-01, 17:47
Re: Reg:upgrade from 20.205 to hadoop2 - HDFS - [mail # user]
...I think this is a real issue. Created HDFS-3731.  On Jul 26, 2012, at 7:51 AM, Brahma Reddy Battula  wrote:  o hadoop2(Upgrade was successful).After up-gradation I am not able...
   Author: Suresh Srinivas, 2012-07-26, 15:27
Re: Namenode and Jobtracker dont start - HDFS - [mail # user]
...Can you share information on the java version that you are using. - Is it as obvious as some previous processes still running and new processes cannot bind to the port? - Another pointer - h...
   Author: Suresh Srinivas, 2012-07-18, 17:47
[HDFS-3002] TestNameNodeMetrics need not wait for metrics update with new metrics framework - HDFS - [issue]
...With older metrics framework, the namenode metrics was updated by replication thread. This required test having to wait for replication interval. This is no longer necessary with metrics2 fr...
http://issues.apache.org/jira/browse/HDFS-3002    Author: Suresh Srinivas, 2012-06-27, 19:35
[HDFS-2954] Remove implementing Writable interface in the datatypes used at the client and the server - HDFS - [issue]
...With the completion of translator layer in HDFS, the separation of server/client datatypes and the wire types is complete. The server/client datatypes no longer need to implement Writables....
http://issues.apache.org/jira/browse/HDFS-2954    Author: Suresh Srinivas, 2012-06-15, 21:09
[HDFS-2938] Recursive delete of a large directory makes namenode unresponsive - HDFS - [issue]
...When deleting a large directory with millions of files, namenode holding FSNamesystem lock will make it unresponsive for other request. In this scenario HDFS-173 added a mechanism to delete ...
http://issues.apache.org/jira/browse/HDFS-2938    Author: Suresh Srinivas, 2012-06-06, 00:29
[HDFS-3211] JournalProtocol changes required for introducing epoch and fencing - HDFS - [issue]
...JournalProtocol changes to introduce epoch in every request. Adding new method fence for fencing a JournalService. On BackupNode fence is a no-op....
http://issues.apache.org/jira/browse/HDFS-3211    Author: Suresh Srinivas, 2012-05-12, 14:03
[HDFS-3393] Rollback on newer release must not be allowed if the layout version in the snapshot is for older release. - HDFS - [issue]
...After upgrading to a new release, the procedure to rollback to older release is to start the namenode in older release with -rollback option.As reported in HADOOP-8371, the rollback was allo...
http://issues.apache.org/jira/browse/HDFS-3393    Author: Suresh Srinivas, 2012-05-10, 05:01
[HDFS-2895] Remove Writable wire protocol related code that is no longer necessary - HDFS - [issue]
...With recent changes to move wire protocol to protocol buffers, the existing writable, related translators are no longer necessary....
http://issues.apache.org/jira/browse/HDFS-2895    Author: Suresh Srinivas, 2012-04-10, 00:57
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