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[HDFS-6038] Allow JournalNode to handle editlog produced by new release with future layoutversion - HDFS - [issue]
...In HA setup, the JNs receive edit logs (blob) from the NN and write into edit log files. In order to write well-formed edit log files, the JNs prepend a header for each edit log file. The pr...
http://issues.apache.org/jira/browse/HDFS-6038    Author: Haohui Mai, 2014-03-21, 15:06
[HDFS-6072] Clean up dead code of FSImage - HDFS - [issue]
...After HDFS-5698 HDFS store FSImage in protobuf format. The old code of saving the FSImage is now dead, which should be removed....
http://issues.apache.org/jira/browse/HDFS-6072    Author: Haohui Mai, 2014-03-12, 14:59
[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
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