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https://issues.apache.org/jira/browse/AVRO-171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mr Fish updated AVRO-171:
-------------------------
Description:
Take a look at this code which is what happens in the SpecificResponder
handshake.
// server side
final Protocol protocol =
ReflectData.get().getProtocol(MyServiceIface.class);
final String string = protocol.toString();
// client side
Protocol.parse(string);
If you have a compound object made of
class A {
B1 b1;
B2 b2;
}
class B1 {
X x;
}
class B2 {
X x;
}
class X {
int i;
}
Then the types will be built up by RefectData.createSchema()
A, B1, X, B2
This is then reversed by RefectData.getProtocol() so B1 has no forward reference
B2, X, B1, A.
But this breaks B2
org.apache.avro.SchemaParseException: Undefined name: "X"
was:
Take a look at this code that is what happens in SpecificResponder handshake.
// server side
final Protocol protocol =
ReflectData.get().getProtocol(MyServiceIface.class);
final String string = protocol.toString();
// client side
Protocol.parse(string);
If you have a compound object made of
class A {
B1 b1;
B2 b2;
}
class B1 {
X x;
}
class B2 {
X x;
}
Then the types will be built up by RefectData.createSchema()
A, B1, X, B2
This is then reversed by RefectData.getProtocol() so B1 has no forward reference
B2, X, B1, A.
But this breaks B2
org.apache.avro.SchemaParseException: Undefined name: "X"
> Protocol Introspection can produce invalid forward references
> -------------------------------------------------------------
>
> Key: AVRO-171
> URL: https://issues.apache.org/jira/browse/AVRO-171
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.2.0
> Environment: java
> Reporter: Mr Fish
>
> Take a look at this code which is what happens in the SpecificResponder
> handshake.
> // server side
> final Protocol protocol =
> ReflectData.get().getProtocol(MyServiceIface.class);
> final String string = protocol.toString();
> // client side
> Protocol.parse(string);
> If you have a compound object made of
> class A {
> B1 b1;
> B2 b2;
> }
> class B1 {
> X x;
> }
> class B2 {
> X x;
> }
> class X {
> int i;
> }
> Then the types will be built up by RefectData.createSchema()
> A, B1, X, B2
> This is then reversed by RefectData.getProtocol() so B1 has no forward
> reference
> B2, X, B1, A.
> But this breaks B2
> org.apache.avro.SchemaParseException: Undefined name: "X"
>
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