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https://issues.apache.org/jira/browse/HADOOP-3787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632215#action_12632215
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Tom White commented on HADOOP-3787:
-----------------------------------
Pete, I think you're right about objects not being cleared out on reads. So
optional fields that aren't set in later reads will retain their values from
earlier reads. The simplest way to fix this is to always create a new object,
but that's won't work well until HADOOP-1230 is done. The alternative is to
patch Thrift to give generated classes a clear() method.
> Add serialization for Thrift
> ----------------------------
>
> Key: HADOOP-3787
> URL: https://issues.apache.org/jira/browse/HADOOP-3787
> Project: Hadoop Core
> Issue Type: Wish
> Components: examples, mapred
> Reporter: Tom White
> Attachments: hadoop-3787.patch, libthrift.jar
>
>
> Thrift (http://incubator.apache.org/thrift/) is cross-language serialization
> and RPC framework. This issue is to write a ThriftSerialization to support
> using Thrift types in MapReduce programs, including an example program. This
> should probably go into contrib.
> (There is a prototype implementation in
> https://issues.apache.org/jira/secure/attachment/12370464/hadoop-serializer-v2.tar.gz)
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