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[HDFS-5038] Backport several branch-2 APIs to branch-1 - HDFS - [issue]
...Backport the following several simple API to branch-1:1. FileSystem#newInstance(Configuration)2. DFSClient#getNamenode()3. FileStatus#isDirectory()...
http://issues.apache.org/jira/browse/HDFS-5038    Author: Jing Zhao, 2013-09-11, 22:33
[HDFS-5118] Provide testing support for DFSClient to drop RPC responses - HDFS - [issue]
...We plan to add capability to DFSClient so that the client is able to intentionally drop responses of NameNode RPC calls according to settings in configuration. In this way we can do better s...
http://issues.apache.org/jira/browse/HDFS-5118    Author: Jing Zhao, 2013-09-07, 14:43
Re: hadoop 2.0.5 datanode heartbeat issue - HDFS - [mail # user]
...Another possibility I can imagine is that the old configuration property "fs.default.name" is still in your configuration with a single NN's host+ip as its value. In that case this bad value...
   Author: Jing Zhao, 2013-08-30, 18:51
[HDFS-4857] Snapshot.Root and AbstractINodeDiff#snapshotINode should not be put into INodeMap when loading FSImage - HDFS - [issue]
...Snapshot.Root, though is a subclass of INodeDirectory, is only used to indicate the root of a snapshot. In the meanwhile, AbstractINodeDiff#snapshotINode is used as copies recording the orig...
http://issues.apache.org/jira/browse/HDFS-4857    Author: Jing Zhao, 2013-08-27, 23:08
[HDFS-5111] Remove duplicated error message for snapshot commands when processing invalid arguments - HDFS - [issue]
...The FSShell commands CreateSnapshot/DeleteSnapshot/RenameSnapshot currently may output duplicated error msg. E.g., when trying to create snapshot on a file, we have the following error msg:c...
http://issues.apache.org/jira/browse/HDFS-5111    Author: Jing Zhao, 2013-08-21, 15:57
[HDFS-5076] Add MXBean methods to query NN's transaction information and JournalNode's journal status - HDFS - [issue]
...Currently NameNode already provides RPC calls to get its last applied transaction ID and most recent checkpoint's transaction ID. It can be helpful to provide support to enable querying thes...
http://issues.apache.org/jira/browse/HDFS-5076    Author: Jing Zhao, 2013-08-16, 15:44
[HDFS-5091] Support for spnego keytab separate from the JournalNode keytab for secure HA - HDFS - [issue]
...This is similar to HDFS-3466 and HDFS-4105: for JournalNode we should also use the web keytab file for SPNEGO filter....
http://issues.apache.org/jira/browse/HDFS-5091    Author: Jing Zhao, 2013-08-14, 15:26
[HDFS-5025] Record ClientId and CallId in EditLog to enable rebuilding retry cache in case of HA failover - HDFS - [issue]
...In case of HA failover, we need to be able to rebuild the retry cache in the other Namenode. We thus need to record client id and call id in the edit log for those "AtMostOnce" operations....
http://issues.apache.org/jira/browse/HDFS-5025    Author: Jing Zhao, 2013-08-02, 06:13
[HDFS-5013] Improve HDFS HA document - HDFS - [issue]
...Currently the HA document does not contain a lot of information about how to make QJM work with security enabled. We may improve the document by adding this part in. Also, some more details ...
http://issues.apache.org/jira/browse/HDFS-5013    Author: Jing Zhao, 2013-07-26, 00:29
[HDFS-5020] Make DatanodeProtocol#blockReceivedAndDeleted idempotent - HDFS - [issue]
...Currently DatanodeProtocol#blockReceivedAndDeleted is not idempotent because pending replication maps in NN only tracks the number of the pending replicas, and a retry request about a receiv...
http://issues.apache.org/jira/browse/HDFS-5020    Author: Jing Zhao, 2013-07-24, 08:37
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