[jira] [Updated] (CRUNCH-193) GenericArrayWritable doesn't handle nulls on read

["Matthias Friedrich (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CRUNCH-193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Friedrich updated CRUNCH-193:
--------------------------------------

    Attachment: CRUNCH-193-Fix-GenericArrayWritable.patch

I discovered this when cleaning up CogroupIT - there must be some nulls in collections behind the scenes.

Here's my first stab at fixing this. The serialization format is fairly inefficient, a more sophisticated implementation would only need one bit per element to keep track of nulls. I think there is a separate ticket for making Writables more efficient.
                
> GenericArrayWritable doesn't handle nulls on read
> -------------------------------------------------
>
>                 Key: CRUNCH-193
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-193
>             Project: Crunch
>          Issue Type: Bug
>    Affects Versions: 0.5.0
>            Reporter: Matthias Friedrich
>            Assignee: Matthias Friedrich
>         Attachments: CRUNCH-193-Fix-GenericArrayWritable.patch
>
>
> GenericArrayWritable throws an EOFException during deserialization when the serialized data contains null values.

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