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[HDFS-6034] DN registration should use DataNodeLayoutVersion instead of NameNodeLayoutVersion - HDFS - [issue]
...Currently the registrationID is in the form of BlockPoolID-NNLayoutVersion. When the NN bumps the layout version during rolling upgrade, the DNs will fail to register with the new NN and exi...
http://issues.apache.org/jira/browse/HDFS-6034    Author: Haohui Mai, 2014-03-01, 01:15
[HDFS-6031] NN running newer software rejects loading the fsimage during rolling upgrade. - HDFS - [issue]
...During rolling upgrade, the standby NN that has a newer layout version will complain about that the fsimage is too old, and require starting the NN using the -upgrade option:File system imag...
http://issues.apache.org/jira/browse/HDFS-6031    Author: Haohui Mai, 2014-02-28, 19:35
[HDFS-6032] -rollingUpgrade query hits NPE after the NN restarts - HDFS - [issue]
...NamenodeRpcServer#rollingUpgrade throws an NPE during query after the NN restarts. It complains that the BlockPoolId in RollingUpgradeInfo equals to null.Further investigation shows that the...
http://issues.apache.org/jira/browse/HDFS-6032    Author: Haohui Mai, 2014-02-28, 01:26
[HDFS-6029] Secondary NN fails to checkpoint after -rollingUpgrade prepare - HDFS - [issue]
...If Secondary NN crashes right after calling dfsadmin -rollingUpgrade prepare, it fails to checkpoint because it fails to download the newest fsimage whose name is fsimage_rollback_txid.To re...
http://issues.apache.org/jira/browse/HDFS-6029    Author: Haohui Mai, 2014-02-28, 01:22
[HDFS-6024] Test whether the NN will reject the downgrade if it has a fsimage from a newer release - HDFS - [issue]
...This jira introduces a new unit test to ensure that the NN will bail out if it is presented with a fsimage generated by the newer release....
http://issues.apache.org/jira/browse/HDFS-6024    Author: Haohui Mai, 2014-02-26, 23:20
[HDFS-6023] Test whether the standby NN continues  to checkpoint after the prepare stage - HDFS - [issue]
...This jira introduces new unit test to ensure that the standby NN continues to checkpoint after it creates the rollback fsimage....
http://issues.apache.org/jira/browse/HDFS-6023    Author: Haohui Mai, 2014-02-26, 23:18
[HDFS-6019] Standby NN might not checkpoint when processing the rolling upgrade marker - HDFS - [issue]
...FsEditlogLoader will call FSNameSystem#triggerRollbackCheckpoint() when processing the rollback marker, which looks like the following:void triggerRollbackCheckpoint() {  if (stand...
http://issues.apache.org/jira/browse/HDFS-6019    Author: Haohui Mai, 2014-02-26, 18:21
[HDFS-6017] Query the status of rolling upgrade in the preparation stage in TestRollingUpgrade and TestRollingUpgradeRollback - HDFS - [issue]
...After HDFS-5778, the administrator needs to query the status of the rolling upgrade before he / she can proceed.The unit tests need to be modified to reflect this change....
http://issues.apache.org/jira/browse/HDFS-6017    Author: Haohui Mai, 2014-02-26, 00:14
[HDFS-5923] Do not persist the ACL bit in the FsPermission - HDFS - [issue]
...The current implementation persists and ACL bit in FSImage and editlogs. Moreover, the security decisions also depend on whether the bit is set.The problem here is that we have to maintain t...
http://issues.apache.org/jira/browse/HDFS-5923    Author: Haohui Mai, 2014-02-25, 00:29
[HDFS-5525] Inline dust templates - HDFS - [issue]
...Currently the dust templates are stored as separate files on the server side. The web UI has to make separate HTTP requests to load the templates, which increases the network overheads and p...
http://issues.apache.org/jira/browse/HDFS-5525    Author: Haohui Mai, 2014-02-24, 20:58
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