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https://issues.apache.org/jira/browse/GORA-24?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543807#comment-13543807
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Nathan Gass commented on GORA-24:
---------------------------------
The reported bug is about using jdbc-type="MEDIUMBLOB", which is not in the
default sql mapping file of Nutch.
Whether jdbc-type="MEDIUMBLOB" ought to work or not is not my decision, but a
better error message and some documentation about supported jdbc-type values
would indeed be nice from a user perspective.
The Data truncation exception in the comment is indeed a problem with Nutch,
assuming that gora does *not* promise to support arbitrary length data when no
length is given. There are two issues about this: NUTCH-1490 and NUTCH-1497.
> Throwing EOFException with MEDIUMBLOB type for inlinks column
> -------------------------------------------------------------
>
> Key: GORA-24
> URL: https://issues.apache.org/jira/browse/GORA-24
> Project: Apache Gora
> Issue Type: Bug
> Components: storage-sql
> Environment: MySQL
> Reporter: Alexis
> Fix For: 0.3
>
>
> I had an exception with DbUpdaterJob complaining that inlinks column of type
> BLOB in webpage table was not big enough to store all the incoming links. So
> I changed the column definition in gora-sql-mapping.xml from BLOB to
> MEDIUMBLOB:
> <field name="inlinks" column="inlinks" jdbc-type="MEDIUMBLOB"/>
> Now I systematically get an exception in the update step:
> java.io.IOException: java.sql.BatchUpdateException: Error reading from
> InputStream java.io.EOFException
> at org.apache.gora.sql.store.SqlStore.flush(SqlStore.java:341)
> at org.apache.gora.sql.store.SqlStore.close(SqlStore.java:185)
> at
> org.apache.gora.mapreduce.GoraRecordWriter.close(GoraRecordWriter.java:55)
> at
> org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:567)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:216)
> Caused by: java.sql.BatchUpdateException: Error reading from InputStream
> java.io.EOFException
> at
> com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2020)
> at
> com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1451)
> at org.apache.gora.sql.store.SqlStore.flush(SqlStore.java:329)
> ... 5 more
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