Hi Folks,
I have the following small schema
{
"name": "Host",
"type": "record",
"namespace": "org.apache.nutch.storage",
"doc": "Host represents a store of webpages or other data which
resides on a server or other computer so that it can be accessed over
the Internet",
"fields": [
{
"name": "metadata",
"type": {
"type": "map",
"values": ["null","bytes"]
},
"doc": "A multivalued metadata container used for storing a wide
variety of host metadata such as structured web server characterists
etc",
"default": {
}
},
{
"name": "outlinks",
"type": {
"type": "map",
"values": ["null","string"]
},
"doc": "Hyperlinks which direct outside of the current host
domain these can used in a histogram style manner to generate host
statistics",
"default": {
}
},
{
"name": "inlinks",
"type": {
"type": "map",
"values": ["null","string"]
},
"doc": "Hyperlinks which link to pages within the current host
domain these can used in a histogram style manner to generate host
statistics",
"default": {
}
}
]
}
When I use Avro 1.7.6 to parse it via an Ant task, I am getting the
following parse exception
[java] Caused by: org.apache.avro.SchemaParseException: No protocol
name specified:
{"name":"Host","type":"record","namespace":"org.apache.nutch.storage","doc":"Host
represents a store of webpages or other data which resides on a server or
other computer so that it can be accessed over the
Internet","fields":[{"name":"metadata","type":{"type":"map","values":["null","bytes"]},"doc":"A
multivalued metadata container used for storing a wide variety of host
metadata such as structured web server characterists
etc","default":{}},{"name":"outlinks","type":{"type":"map","values":["null","string"]},"doc":"Hyperlinks
which direct outside of the current host domain these can used in a
histogram style manner to generate host
statistics","default":{}},{"name":"inlinks","type":{"type":"map","values":["null","string"]},"doc":"Hyperlinks
which link to pages within the current host domain these can used in a
histogram style manner to generate host statistics","default":{}}]}
[java] at org.apache.avro.Protocol.parseName(Protocol.java:426)
[java] at org.apache.avro.Protocol.parse(Protocol.java:399)
[java] at org.apache.avro.Protocol.parse(Protocol.java:390)
[java] at org.apache.avro.Protocol.parse(Protocol.java:361)
[java] at
org.apache.avro.compiler.specific.SpecificCompiler.compileProtocol(SpecificCompiler.java:248)
[java] at
org.apache.avro.compiler.specific.SpecificCompiler.compileProtocol(SpecificCompiler.java:238)
[java] at
org.apache.avro.compiler.specific.SpecificCompiler.main(SpecificCompiler.java:719)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
[java] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:606)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
[java] ... 20 more
[java] Java Result: -1
The thing is that I do not wish this to be a Protocol as such, it is merely
a simple Schema. Can anyone help me out to debug this?
Thank you
Lewis
--
*Lewis*
