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[HDFS-5137] Improve WriteManager for processing stable write requests and commit requests - HDFS - [issue]
...WriteManager#handleCommit needs to block until all the data before the commitOffset has been received. This jira plans to improve the current concurrency implementation for this blocking cal...
http://issues.apache.org/jira/browse/HDFS-5137    Author: Jing Zhao, 2013-10-02, 00:49
[HDFS-5217] Namenode log directory link is inaccessible in secure cluster - HDFS - [issue]
...Currently in a secured HDFS cluster, 401 error is returned when clicking the "NameNode Logs" link.Looks like the cause of the issue is that the httpServer does not correctly set the security...
http://issues.apache.org/jira/browse/HDFS-5217    Author: Jing Zhao, 2013-09-26, 01:15
[HDFS-5212] Refactor RpcMessage and NFS3Response to support different types of authentication information - HDFS - [issue]
...Currently the authentication information is hard coded in RpcMessage (and its subclasses) and NFS3Response (and its subclasses) as AuthFlavor value and empty byte array. We need to refactor ...
http://issues.apache.org/jira/browse/HDFS-5212    Author: Jing Zhao, 2013-09-25, 00:33
[HDFS-5045] Add more unit tests for retry cache to cover all AtMostOnce methods - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-5045    Author: Jing Zhao, 2013-09-25, 00:33
[HDFS-4971] Move IO operations out of locking in OpenFileCtx - HDFS - [issue]
...Currently some IO operations (such as writing data to HDFS and dumping to local disk) in OpenFileCtx may hold a lock which can block processing incoming writing requests. This jira aims to o...
http://issues.apache.org/jira/browse/HDFS-4971    Author: Jing Zhao, 2013-09-24, 14:29
[HDFS-4096] Add snapshot information to namenode WebUI - HDFS - [issue]
...Add snapshot information to namenode WebUI....
http://issues.apache.org/jira/browse/HDFS-4096    Author: Jing Zhao, 2013-09-14, 14:42
[HDFS-5192] NameNode may fail to start when dfs.client.test.drop.namenode.response.number is set - HDFS - [issue]
...In HDFS-5118 we add a new configuration property "dfs.client.test.drop.namenode.response.number" for DFSClient, which controls if DFSClient drops RPC responses for testing purpose. Currently...
http://issues.apache.org/jira/browse/HDFS-5192    Author: Jing Zhao, 2013-09-13, 15:35
[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
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