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[HDFS-5138] Support HDFS upgrade in HA - HDFS - [issue]
...With HA enabled, NN wo't start with "-upgrade". Since there has been a layout version change between 2.0.x and 2.1.x, starting NN in upgrade mode was necessary when deploying 2.1.x to an exi...
http://issues.apache.org/jira/browse/HDFS-5138    Author: Kihwal Lee, 2014-03-25, 14:03
[HDFS-3087] Decomissioning on NN restart can complete without blocks being replicated - HDFS - [issue]
...If a data node is added to the exclude list and the name node is restarted, the decomissioning happens right away on the data node registration. At this point the initial block report has no...
http://issues.apache.org/jira/browse/HDFS-3087    Author: Kihwal Lee, 2014-03-25, 14:03
[HDFS-6105] NN web UI for DN list loads the same jmx page multiple times. - HDFS - [issue]
...When loading "Datanodes" page of the NN web UI, the same jmx query is made multiple times. For a big cluster, that's a lot of data and overhead....
http://issues.apache.org/jira/browse/HDFS-6105    Author: Kihwal Lee, 2014-03-20, 15:00
[HDFS-5796] The file system browser in the namenode UI requires SPNEGO. - HDFS - [issue]
...After HDFS-5382, the browser makes webhdfs REST calls directly, requiring SPNEGO to work between user's browser and namenode.  This won't work if the cluster's security infrastructure i...
http://issues.apache.org/jira/browse/HDFS-5796    Author: Kihwal Lee, 2014-03-06, 15:09
Re: [VOTE] Merge HDFS-5535 Rolling Upgrade Improvement - HDFS - [mail # dev]
...+1 ...
   Author: Kihwal Lee, 2014-02-28, 03:03
[HDFS-6020] Fix the five findbugs warnings - HDFS - [issue]
...The latest build of the HDFS-5535 branch (rolling upgrades) shows five new findbugs warnings....
http://issues.apache.org/jira/browse/HDFS-6020    Author: Kihwal Lee, 2014-02-27, 00:57
[HDFS-5924] Utilize OOB upgrade message processing for writes - HDFS - [issue]
...After HDFS-5585 and HDFS-5583, clients and datanodes can coordinate shutdown-restart in order to minimize failures or locality loss.In this jira, HDFS client is made aware of the restart OOB...
http://issues.apache.org/jira/browse/HDFS-5924    Author: Kihwal Lee, 2014-02-25, 19:29
[HDFS-5498] Improve datanode startup time - HDFS - [issue]
...Similarly to HDFS-5027, an improvement  can be made for getVomeMap(). This is the phase in which ReplicaMap.is populated.  But it will be even better if datanode scans only once an...
http://issues.apache.org/jira/browse/HDFS-5498    Author: Kihwal Lee, 2014-02-25, 19:29
[HDFS-6014] Fix findbug warnings introduced by HDFS-5583 - HDFS - [issue]
...Two findbug warning have been generated by HDFS-5583....
http://issues.apache.org/jira/browse/HDFS-6014    Author: Kihwal Lee, 2014-02-25, 18:52
[HDFS-6015] Fix TestBlockRecovery#testRaceBetweenReplicaRecoveryAndFinalizeBlock - HDFS - [issue]
...After HDFS-5583, TestBlockRecovery.testRaceBetweenReplicaRecoveryAndFinalizeBlock started failing. It seems HDFS-5583 exposed a bug.When a receiver thread is interrupted, it is supposed to i...
http://issues.apache.org/jira/browse/HDFS-6015    Author: Kihwal Lee, 2014-02-25, 18:51
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