[
https://issues.apache.org/jira/browse/HDFS-7433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kihwal Lee updated HDFS-7433:
-----------------------------
Resolution: Fixed
Fix Version/s: 2.8.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
I've committed this to trunk and branch-2. Thanks everyone for reviewing and
Daryn for fixing it.
> Optimize performance of DatanodeManager's node map
> --------------------------------------------------
>
> Key: HDFS-7433
> URL: https://issues.apache.org/jira/browse/HDFS-7433
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Labels: BB2015-05-TBR
> Fix For: 2.8.0
>
> Attachments: HDFS-7433.patch, HDFS-7433.patch, HDFS-7433.patch,
> HDFS-7433.patch
>
>
> The datanode map is currently a {{TreeMap}}. For many thousands of
> datanodes, tree lookups are ~10X more expensive than a {{HashMap}}.
> Insertions and removals are up to 100X more expensive.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
