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https://issues.apache.org/jira/browse/HADOOP-3638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jothi Padmanabhan updated HADOOP-3638:
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Attachment: hadoop-3638-v7.patch
Attaching the latest patch incorporating the ConcurrentHashMap and
BlockingQueue.
Patch also contains a test case.
The following is the output from testpatch
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec]
[exec]
> Cache the iFile index files in memory to reduce seeks during map output
> serving
> -------------------------------------------------------------------------------
>
> Key: HADOOP-3638
> URL: https://issues.apache.org/jira/browse/HADOOP-3638
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Devaraj Das
> Assignee: Jothi Padmanabhan
> Fix For: 0.19.0
>
> Attachments: hadoop-3638-v1.patch, hadoop-3638-v2.patch,
> hadoop-3638-v3.patch, hadoop-3638-v4.patch, hadoop-3638-v5.patch,
> hadoop-3638-v6.patch, hadoop-3638-v7.patch
>
>
> The iFile index files can be cached in memory to reduce seeks during map
> output serving.
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