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[HDFS-5851] Support memory as a storage medium - HDFS - [issue]
...Memory can be used as a storage medium for smaller/transient files for fast write throughput.More information/design will be added later....
http://issues.apache.org/jira/browse/HDFS-5851    Author: Arpit Agarwal, 2014-04-17, 22:55
[HDFS-6230] Expose upgrade status through NameNode web UI - HDFS - [issue]
...The NameNode web UI does not show upgrade information anymore. Hadoop 2.0 also does not have the hadoop dfsadmin -upgradeProgress command to check the upgrade status....
http://issues.apache.org/jira/browse/HDFS-6230    Author: Arpit Agarwal, 2014-04-10, 20:26
[HDFS-6209] Fix flaky test TestValidateConfigurationSettings.testThatDifferentRPCandHttpPortsAreOK - HDFS - [issue]
...The test depends on hard-coded port numbers being available. It should retry if the chosen port is in use.Exception details below in a comment....
http://issues.apache.org/jira/browse/HDFS-6209    Author: Arpit Agarwal, 2014-04-10, 20:08
[HDFS-6094] The same block can be counted twice towards safe mode threshold - HDFS - [issue]
...BlockManager#addStoredBlock can cause the same block can be counted towards safe mode threshold. We see this manifest via TestHASafeMode#testBlocksAddedWhileStandbyIsDown failures on Ubuntu....
http://issues.apache.org/jira/browse/HDFS-6094    Author: Arpit Agarwal, 2014-03-25, 16:50
[HDFS-6120] Fix and improve safe mode log messages - HDFS - [issue]
...In HA mode the SBN can enter safe-mode extension and stay there even after the extension period has elapsed but continue to return the safemode message stating that "The threshold has been r...
http://issues.apache.org/jira/browse/HDFS-6120    Author: Arpit Agarwal, 2014-03-22, 15:00
[HDFS-6101] TestReplaceDatanodeOnFailure fails occasionally - HDFS - [issue]
...Exception details in a comment below.The failure repros on both OS X and Linux if I run the test ~10 times in a loop....
http://issues.apache.org/jira/browse/HDFS-6101    Author: Arpit Agarwal, 2014-03-13, 00:53
[HDFS-6098] ConcurrentModificationException exception during DataNode shutdown - HDFS - [issue]
...Exception hit during DN shutdown while running TestWebHdfsWithMultipleNameNodes:java.util.ConcurrentModificationException: null at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894) ...
http://issues.apache.org/jira/browse/HDFS-6098    Author: Arpit Agarwal, 2014-03-12, 23:06
[HDFS-6078] TestIncrementalBlockReports is flaky - HDFS - [issue]
...TestIncrementalBlockReports#testReplaceReceivedBlock can fail if an report is generated between the two calls to injectBlockReceived()....
http://issues.apache.org/jira/browse/HDFS-6078    Author: Arpit Agarwal, 2014-03-09, 14:55
Re: [VOTE] Merge HDFS-5535 Rolling Upgrade Improvement - HDFS - [mail # dev]
...+1 for merging the feature to trunk.On Tue, Feb 25, 2014 at 1:41 PM, Tsz Wo Sze  wrote:CONFIDENTIALITY NOTICENOTICE: This message is intended for the use of the individual or entity to ...
   Author: Arpit Agarwal, 2014-03-03, 17:59
[HDFS-5994] Fix TestDataNodeRollingUpgrade failure - HDFS - [issue]
...Link to Jenkins precommit run for HDFS-5535.Failure exception:org.apache.hadoop.hdfs.BlockMissingException: Could not obtain block: BP-1810550394-67.195.138.22-1392967331823:blk_1073741825_1...
http://issues.apache.org/jira/browse/HDFS-5994    Author: Arpit Agarwal, 2014-02-21, 22:40
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