[jira] Updated: (HADOOP-1584) Bug in readFields of GenericWritable

["Espen Amble Kolstad (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-1584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Espen Amble Kolstad updated HADOOP-1584:
----------------------------------------

    Attachment: GenericWritable.patch

Patch for trunk

> Bug in readFields of GenericWritable
> ------------------------------------
>
>                 Key: HADOOP-1584
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1584
>             Project: Hadoop
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.12.3, 0.13.0, 0.14.0
>            Reporter: Espen Amble Kolstad
>            Priority: Minor
>         Attachments: GenericWritable.patch
>
>
> When getTypes() returns more than 127 entries, read of classes with index > 127 will fail.
> {code}
>   public void readFields(DataInput in) throws IOException {
>     type = in.readByte();
>     Class clazz = getTypes()[type];
>     ...
>   }
> {code}
> {code}
>   public void readFields(DataInput in) throws IOException {
>     type = in.readByte();
>     Class clazz = getTypes()[type & 0xff];
>     ...
>   }
> {code}

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