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https://issues.apache.org/jira/browse/HBASE-2532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867948#action_12867948
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Kay Kay commented on HBASE-2532:
--------------------------------
Thanks, stack. Makes sense. Will submit a patch for the branch ( for 0.20.5,
release) for the same.
> LuceneDocumentWrapper Needs no argument constructor
> ---------------------------------------------------
>
> Key: HBASE-2532
> URL: https://issues.apache.org/jira/browse/HBASE-2532
> Project: Hadoop HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.20.3
> Environment: All
> Reporter: Ananth Sarathy
> Assignee: Kay Kay
>
> For reading an object out a sequencefile, a no argument constructor is
> required...
> if not you end up with a java.lang.NoSuchMethodException
> From Owen O'Malley
> Assumption for Writables that should be documented somewhere:
> * Each type must have a 0 argument constructor.
> * Each call to write must not assume any shared state.
> * Each call to readFields must consume exactly the number of bytes
> produced by write.
> SequenceFile also assumes:
> * All keys are exactly the same type (not polymorphic).
> * All values are exactly the same type.
> * Both types are specified by the writer in the create call.
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