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[HDFS-3122] Block recovery with closeFile flag true can race with blockReport. Due to this blocks are getting marked as corrupt. - HDFS - [issue]
...Block Report can race with Block Recovery with closeFile flag true. Block report generated just before block recovery at DN side and due to N/W problems, block report got delayed to NN....
http://issues.apache.org/jira/browse/HDFS-3122    Author: Uma Maheswara Rao G, 2014-04-24, 16:39
[HDFS-6246] Remove 'dfs.support.append' flag from trunk code - HDFS - [issue]
...we added "dfs.support.append' flag long ago to control the issues with append feature.  Now in trunk and hadoop-2, by default we enabled and using it for long time.  So, I propose ...
http://issues.apache.org/jira/browse/HDFS-6246    Author: Uma Maheswara Rao G, 2014-04-24, 13:49
[HDFS-2975] Rename with overwrite flag true can make NameNode to stuck in safemode on NN (crash + restart). - HDFS - [issue]
...When we rename the file with overwrite flag as true, it will delete the destination file blocks. After deleting the blocks, whenever it releases the fsNameSystem lock, NN can give the invali...
http://issues.apache.org/jira/browse/HDFS-2975    Author: Uma Maheswara Rao G, 2014-04-23, 18:57
[HDFS-5998] TestHDFSCLI tests will fail if machine user names are not the combination of alphanumeric - HDFS - [issue]
...From my jenkins results, I have seen the following failures Testing mode: test2014-02-21 19:45:07,448 INFO  cli.CLITestHelper (CLITestHelper.java:displayResults(212)) - 2014-02-21 ...
http://issues.apache.org/jira/browse/HDFS-5998    Author: Uma Maheswara Rao G, 2014-02-22, 20:55
[HDFS-2695] ReadLock should be enough for FsNameSystem#renewLease. - HDFS - [issue]
...When checking the issue HDFS-1241, found this point.Since renewLease is not updating any nameSystem related data, can we make this lock to read lock?am i missing some thing here?...
http://issues.apache.org/jira/browse/HDFS-2695    Author: Uma Maheswara Rao G, 2014-02-15, 19:02
[HDFS-5730] Inconsistent Audit logging for HDFS APIs - HDFS - [issue]
...When looking at the audit loggs in HDFS, I am seeing some inconsistencies what was logged with audit and what is added recently.For more details please check the comments....
http://issues.apache.org/jira/browse/HDFS-5730    Author: Uma Maheswara Rao G, 2014-01-28, 13:18
[HDFS-5789] Some of snapshot APIs missing checkOperation double check in fsn - HDFS - [issue]
...HDFS-4591 introduced double checked for HA state while taking fsn lock.checkoperation made before actually taking lock and after the lock again.This pattern missed in some of the snapshot AP...
http://issues.apache.org/jira/browse/HDFS-5789    Author: Uma Maheswara Rao G, 2014-01-25, 13:38
Re: NameNode be formated while namenode is running - HDFS - [mail # dev]
...Seems like you are hitting https://issues.apache.org/jira/browse/HDFS-1690 ?   On Wed, Jan 15, 2014 at 6:58 AM, Stanley Shi  wrote:  ...
   Author: Uma Maheswara Rao G, 2014-01-15, 03:47
[HDFS-5724] modifyCacheDirective logging audit log command wrongly as addCacheDirective - HDFS - [issue]
...modifyCacheDirective: if (isAuditEnabled() && isExternalInvocation()) {        logAuditEvent(success, "addCacheDirective", null, null, null);  ...
http://issues.apache.org/jira/browse/HDFS-5724    Author: Uma Maheswara Rao G, 2014-01-08, 14:46
[HDFS-5665] Remove the unnecessary writeLock while initializing CacheManager in FsNameSystem Ctor - HDFS - [issue]
...I just saw the below piece of code in Fsnamesystem ctor. writeLock();      try {        this.cacheManager = new CacheManager(this, conf, blo...
http://issues.apache.org/jira/browse/HDFS-5665    Author: Uma Maheswara Rao G, 2013-12-17, 15:01
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