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[HDFS-7270] Implementing congestion control in writing pipeline - HDFS - [issue]
...When a client writes to HDFS faster than the disk bandwidth of the DNs, it  saturates the disk bandwidth and put the DNs unresponsive. The client only backs off by aborting / recovering...
http://issues.apache.org/jira/browse/HDFS-7270    Author: Haohui Mai, 2014-10-21, 01:48
[expand - 3 more] - Re: [DISCUSS] Resolving the divergences for web-related code between branch-2 and trunk - HDFS - [mail # dev]
...bq. If it cost nothing, I'd be in favour, but if the ongoing maintenance ishigh then I think that it has to be retired at some time. All that'sbeing arguedabout is "when".There are several t...
   Author: Haohui Mai, 2014-10-02, 17:39
[HDFS-6757] Simplify lease manager with INodeID - HDFS - [issue]
...Currently the lease manager records leases based on path instead of inode ids. Therefore, the lease manager needs to carefully keep track of the path of active leases during renames and dele...
http://issues.apache.org/jira/browse/HDFS-6757    Author: Haohui Mai, 2014-09-05, 00:19
[HDFS-5647] Merge INodeDirectory.Feature and INodeFile.Feature - HDFS - [issue]
...HDFS-4685 implements ACLs for HDFS, which can benefit from the INode features introduced in HDFS-5284. The current code separates the INode feature of INodeFile and INodeDirectory into two d...
http://issues.apache.org/jira/browse/HDFS-5647    Author: Haohui Mai, 2014-09-04, 02:15
[HDFS-5768] Consolidate the serialization code in DelegationTokenSecretManager - HDFS - [issue]
...This jira proposes to extract a private class for the serialization code for DelegationTokenSecretManager, so that it becomes easier to introduce new code paths to serialize the same set of ...
http://issues.apache.org/jira/browse/HDFS-5768    Author: Haohui Mai, 2014-09-04, 02:15
[HDFS-5941] add dfs.namenode.secondary.https-address and dfs.namenode.secondary.https-address in hdfs-default.xml - HDFS - [issue]
...HDFS-5629 introduces two new configuration dfs.namenode.secondary.https-address and dfs.namenode.secondary.https-address to allow the user to specify which https endpoints the server would l...
http://issues.apache.org/jira/browse/HDFS-5941    Author: Haohui Mai, 2014-09-04, 02:15
[HDFS-5915] Refactor FSImageFormatProtobuf to simplify cross section reads - HDFS - [issue]
...The PB-based FSImage puts the user name and the group name into a separate section for deduplication. This jira refactor the code so that it is easier to apply the same techniques for other ...
http://issues.apache.org/jira/browse/HDFS-5915    Author: Haohui Mai, 2014-09-04, 02:15
[HDFS-5698] Use protobuf to serialize / deserialize FSImage - HDFS - [issue]
...Currently, the code serializes FSImage using in-house serialization mechanisms. There are a couple disadvantages of the current approach: Mixing the responsibility of reconstruction and seri...
http://issues.apache.org/jira/browse/HDFS-5698    Author: Haohui Mai, 2014-08-22, 10:47
[HDFS-6370] Web UI fails to display in intranet under IE - HDFS - [issue]
...When IE renders the web UI of a cluster than runs in the intranet, it forces the compatibility mode to be turned on which causes the UI fails to render correctly....
http://issues.apache.org/jira/browse/HDFS-6370    Author: Haohui Mai, 2014-08-15, 06:41
[HDFS-5887] Add suffix to generated protobuf class - HDFS - [issue]
...As suggested by Todd Lipcon, the code is more readable if we give each class generated by the protobuf the suffix "Proto".This jira proposes to rename the classes and to introduce no functio...
http://issues.apache.org/jira/browse/HDFS-5887    Author: Haohui Mai, 2014-08-14, 20:36
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