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https://issues.apache.org/jira/browse/GORA-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862252#comment-13862252
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Alparslan Avcı commented on GORA-246:
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Hi [~lewismc],
I have faced some problems when I tried to use GORA_94 branch on Nutch. In
PersistentSerializer class, SpecificDatumWriter class is used to write objects
in GORA_94. However, within this writer, there are no specific write() method
and GenericDatumWriter's write() methods are used. When serializing a
Persistent object, these methods can throw NullPointerException when any of the
object's fields is null. For instance, when writing the Webpage to context as a
value in GeneratorMapper, the baseUrl field is null and causes a
NullPointerException.
In Gora 0.3, PersistentSerializer class uses PersistentDatumWriter (extended
from SpecificDatumWriter) to writes objects according to their fields'
readibility. Maybe in GORA_94, we also have to extend SpecificDatumWriter to a
new class in order to add some controls like null field checking.
> Upgrade to Avro 1.7.X in gora-hbase
> -----------------------------------
>
> Key: GORA-246
> URL: https://issues.apache.org/jira/browse/GORA-246
> Project: Apache Gora
> Issue Type: Sub-task
> Components: gora-core, gora-hbase
> Affects Versions: 0.4
> Reporter: Lewis John McGibbney
> Fix For: 0.4
>
> Attachments: GORA-246.patch, GORA-246v2.patch, GORA-246v3.patch,
> GORA-246v3.patch, GORA-246v4.patch, GORA_246.HBaseDriverTest.patch,
> GORA_246.HBaseDriverTest.v2.patch
>
>
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