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https://issues.apache.org/jira/browse/HDFS-4465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HDFS-4465:
---------------------------------
Resolution: Fixed
Fix Version/s: 2.1.0-beta
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
I've just committed this to trunk and branch-2.
Suresh, I see all of branch-2.1-beta, branch-2.1.0-alpha, and
branch-2.1.0-beta. Would you mind merging this commit to whichever of those
branches you think is appropriate? Thanks a lot.
> Optimize datanode ReplicasMap and ReplicaInfo
> ---------------------------------------------
>
> Key: HDFS-4465
> URL: https://issues.apache.org/jira/browse/HDFS-4465
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.0.5-alpha
> Reporter: Suresh Srinivas
> Assignee: Aaron T. Myers
> Fix For: 2.1.0-beta
>
> Attachments: dn-memory-improvements.patch, HDFS-4465.patch,
> HDFS-4465.patch, HDFS-4465.patch
>
>
> In Hadoop a lot of optimization has been done in namenode data structures to
> be memory efficient. Similar optimizations are necessary for Datanode
> process. With the growth in storage per datanode and number of blocks hosted
> on datanode, this jira intends to optimize long lived ReplicasMap and
> ReplicaInfo objects.
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