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https://issues.apache.org/jira/browse/HADOOP-3283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler updated HADOOP-3283:
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Release Note:
Added an IPC server in DataNode and a new IPC protocol InterDatanodeProtocol.
Added conf properties dfs.datanode.ipc.address and dfs.datanode.handler.count
with defaults "0.0.0.0:50020" and 3, respectively.
Changed the serialization in DatanodeRegistration and DatanodeInfo, and
therefore, updated the versionID in ClientProtocol, DatanodeProtocol,
NamenodeProtocol.
was:
Incompatible changes:
- Added an IPC server in DataNode and a new IPC protocol InterDatanodeProtocol.
Added conf properties dfs.datanode.ipc.address and dfs.datanode.handler.count
with defaults "0.0.0.0:50020" and 3, respectively.
- Changed the serialization in DatanodeRegistration and DatanodeInfo, and
therefore, updated the versionID in ClientProtocol, DatanodeProtocol,
NamenodeProtocol.
Hadoop Flags: [Incompatible change, Reviewed] (was: [Reviewed,
Incompatible change])
> Need a mechanism for data nodes to update generation stamps.
> ------------------------------------------------------------
>
> Key: HADOOP-3283
> URL: https://issues.apache.org/jira/browse/HADOOP-3283
> Project: Hadoop Core
> Issue Type: New Feature
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.18.0
>
> Attachments: 3283_20080423c.patch, 3283_20080424.patch,
> 3283_20080425versionID.patch
>
>
> For implementing file append feature (HADOOP-1700), a generation stamp is
> added to each block. We need a mechanism for data nodes to update generation
> stamps for lease recovery.
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