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[HDFS-5905] Upgrade and rolling upgrade should not be allowed simultaneously - HDFS - [issue]
...The existing upgrade/finalize mechanism and the new rolling upgrade mechanism are two distinct features for upgrading the HDFS software.  They cannot be executed simultaneously....
http://issues.apache.org/jira/browse/HDFS-5905    Author: Tsz Wo, 2014-02-18, 20:15
[HDFS-5286] Flatten INodeDirectory hierarchy: add DirectoryWithQuotaFeature - HDFS - [issue]
...Similar to the case of INodeFile (HFDS-5285), we should also flatten the INodeDirectory hierarchy.This is the first step to add DirectoryWithQuotaFeature for replacing INodeDirectoryWithQuot...
http://issues.apache.org/jira/browse/HDFS-5286    Author: Tsz Wo, 2014-02-14, 14:51
[HDFS-5531] Combine the getNsQuota() and getDsQuota() methods in INode - HDFS - [issue]
...I suggest to combine these two methods into public Quota.Counts getQuotaCounts()...
http://issues.apache.org/jira/browse/HDFS-5531    Author: Tsz Wo, 2014-02-14, 14:51
[HDFS-5869] When rolling upgrade is in progress, NN should only create checkpoint right before the upgrade marker - HDFS - [issue]
...When starting rolling upgrade, NN should create a checkpoint before it writes the upgrade marker edit log transaction. When rolling upgrade is in progress, NN should reject saveNamespace rpc...
http://issues.apache.org/jira/browse/HDFS-5869    Author: Tsz Wo, 2014-02-07, 02:22
[HDFS-5754] Split LayoutVerion into NamenodeLayoutVersion and DatanodeLayoutVersion - HDFS - [issue]
...Currently, LayoutVersion defines the on-disk data format and supported features of the entire cluster including NN and DNs.  LayoutVersion is persisted in both NN and DNs.  When a ...
http://issues.apache.org/jira/browse/HDFS-5754    Author: Tsz Wo, 2014-02-03, 23:54
[HDFS-5835] Add a new option for starting standby NN when rolling upgrade is in progress - HDFS - [issue]
...When rolling upgrade is already in-progress and the standby NN is not yet started up, a new startup option is needed for the standby NN to initialize the upgrade status....
http://issues.apache.org/jira/browse/HDFS-5835    Author: Tsz Wo, 2014-01-28, 05:41
[HDFS-5752] Add a new DFSAdminCommand for rolling upgrade - HDFS - [issue]
...We need to add a new DFSAdmin to start, finalize and query rolling upgrade....
http://issues.apache.org/jira/browse/HDFS-5752    Author: Tsz Wo, 2014-01-27, 07:39
[HDFS-5753] Add new NN startup options for downgrade and rollback using upgrade marker - HDFS - [issue]
...Namenode could be started up with -upgrade / -rollback.  The -rollback option will restore the data using the previous directory.  New options are needed for downgrade and rollback...
http://issues.apache.org/jira/browse/HDFS-5753    Author: Tsz Wo, 2014-01-27, 07:39
[HDFS-772] DFSClient.getFileChecksum(..) computes file md5 with extra padding - HDFS - [issue]
...//DFSClient.getFileChecksum(..)    final MD5Hash fileMD5 = MD5Hash.digest(md5out.getData()); The fileMD5 is computed with the entire byte array returning by md5out.getData(). ...
http://issues.apache.org/jira/browse/HDFS-772    Author: Tsz Wo, 2014-01-18, 05:53
[HDFS-5786] Support query and finalize rolling upgrade - HDFS - [issue]
...This is Namenode side implementation for supporting QUERY and FINALIZE actions of rolling upgrade....
http://issues.apache.org/jira/browse/HDFS-5786    Author: Tsz Wo, 2014-01-18, 02:07
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