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https://issues.apache.org/jira/browse/HADOOP-3761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12613644#action_12613644
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Owen O'Malley commented on HADOOP-3761:
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Making the constructor visible is reasonable, but it isn't necessary if you use
ReflectionUtils.newInstance to make instance. Even better is using the
serialization framework so that it supports arbitrary types (Thrift, Writable,
ProtocolBuffers, etc)
> FileSplit's default constructor should be made "public"
> -------------------------------------------------------
>
> Key: HADOOP-3761
> URL: https://issues.apache.org/jira/browse/HADOOP-3761
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Priority: Trivial
> Attachments: 3761-1.patch
>
>
> mapred.FileSplit's default constructor is currently "package" visible. We
> should make it "public" so we can support a GenericSplit class outside mapred
> package, which could create FileSplit instances using reflection and
> serialize/deserialize FileSplit through Writable interface.
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