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https://issues.apache.org/jira/browse/PIG-2509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201728#comment-13201728
]
Russell Jurney commented on PIG-2509:
-------------------------------------
The offending code that is called is here: class
org.apache.pig.newplan.logical.Util
...
public static LogicalSchema.LogicalFieldSchema
translateFieldSchema(Schema.FieldSchema fs) {
LogicalSchema newSchema = null;
if (fs.schema!=null) {
newSchema = translateSchema(fs.schema);
}
LogicalSchema.LogicalFieldSchema newFs = new
LogicalSchema.LogicalFieldSchema(fs.alias, newSchema, fs.type);
return newFs;
}
/**
* This function translates the new LogicalSchema into old Schema format
required
* by PhysicalOperators
* @param schema LogicalSchema to be converted to Schema
* @return Schema that is converted from LogicalSchema
* @throws FrontendException
*/
public static Schema translateSchema(LogicalSchema schema) {
if (schema == null) {
return null;
}
Schema s2 = new Schema();
List<LogicalSchema.LogicalFieldSchema> ll = schema.getFields();
for (LogicalSchema.LogicalFieldSchema f: ll) {
Schema.FieldSchema f2 = null;
try {
f2 = new Schema.FieldSchema(f.alias, translateSchema(f.schema),
f.type);
f2.canonicalName = ((Long)f.uid).toString();
s2.add(f2);
} catch (FrontendException e) {
}
}
return s2;
}
> Util.getSchemaFromString fails with java.lang.NullPointerException when a
> tuple in a bag has no name (as when used in MongoStorage UDF)
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: PIG-2509
> URL: https://issues.apache.org/jira/browse/PIG-2509
> Project: Pig
> Issue Type: Bug
> Components: piggybank
> Affects Versions: 0.9.1
> Environment: No, genetics!
> Reporter: Russell Jurney
> Priority: Blocker
> Labels: fun, happy, mongo, pants, sad, udf, util
>
> The MongoStorage UDF ( https://github.com/mongodb/mongo-hadoop ) fails on its
> call to Util.getSchemaFromString when a tuple is not named. The call
> succeeds when the tuple is explicitly named. As tuple naming is optional,
> this is a bug.
> See http://www.mail-archive.com/user%40pig.apache.org/msg04199.html and
> http://www.mail-archive.com/dev%40pig.apache.org/msg08016.html
> This makes me sad :(
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