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https://issues.apache.org/jira/browse/AVRO-2209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Darryl Green updated AVRO-2209:
-------------------------------
Description:
>From the Avro specification re default values (and hence JSON encoding in
>general):
|field default values|
||avro type||json type||example||
|null|null|null|
|boolean|boolean|true|
|int,long|integer|1|
|float,double|number|1.1|
|bytes|string|"\u00FF"|
|string|string|"foo"|
|record|object|{"a": 1}|
|enum|string|"FOO"|
|array|array|[1]|
|map|object|{"a": 1}|
|fixed|string|"\u00ff"|
Note that float and double have a "json type" of number (while int, long have a
"json type" of integer. In JSON an integer is a number that is constrained to
be an integer. There is no way to deduce from a JSON value that has no
fractional part whether that value is a number or an integer - it is
either/both.
I believe that the following schema is, on that basis, valid:
"{ \"name\":\"test\", \"type\": \"record\", \"fields\": [
{\"name\": \"double\",\"type\": \"double\",\"default\" : 2 }
]}",
We have a substantial body of similar schema in use but have not attempted to
use C++ to resolve them before - and now this is failing.
was:
>From the Avro specification re default values (and hence JSON encoding in
>general):
|field default values|
||avro type||json type||example||
|null|null|null|
|boolean|boolean|true|
|int,long|integer|1|
|float,double|number|1.1|
|bytes|string|"\u00FF"|
|string|string|"foo"|
|record|object|{"a": 1}|
|enum|string|"FOO"|
|array|array|[1]|
|map|object|{"a": 1}|
|fixed|string|"\u00ff"|
Note that float and double have a "json type" of number (while int, long have a
"json type" of integer. In JSON an integer is a number that is constrained to
be an integer. There is no way to deduce from a JSON value that has no
fractional part whether that value is a number or an integer - it is
either/both.
I believe that the following schema is, on that basis, valid:
"\{ \"name\":\"test\", \"type\": \"record\", \"fields\": [ {\"name\":
\"double\",\"type\": \"double\",\"default\" : 2 }]}",
We have a substantial body of similar schema in use but have not attempted to
use C++ to resolve them before - and now this is failing.
I can provide a patch/PR that relaxes this rule...
> Default value type validation over-zealous
> ------------------------------------------
>
> Key: AVRO-2209
> URL: https://issues.apache.org/jira/browse/AVRO-2209
> Project: Avro
> Issue Type: Bug
> Components: c++
> Affects Versions: 1.8.2
> Reporter: Darryl Green
> Priority: Major
>
> From the Avro specification re default values (and hence JSON encoding in
> general):
>
> |field default values|
> ||avro type||json type||example||
> |null|null|null|
> |boolean|boolean|true|
> |int,long|integer|1|
> |float,double|number|1.1|
> |bytes|string|"\u00FF"|
> |string|string|"foo"|
> |record|object|{"a": 1}|
> |enum|string|"FOO"|
> |array|array|[1]|
> |map|object|{"a": 1}|
> |fixed|string|"\u00ff"|
>
> Note that float and double have a "json type" of number (while int, long have
> a "json type" of integer. In JSON an integer is a number that is constrained
> to be an integer. There is no way to deduce from a JSON value that has no
> fractional part whether that value is a number or an integer - it is
> either/both.
> I believe that the following schema is, on that basis, valid:
> "{ \"name\":\"test\", \"type\": \"record\", \"fields\": [
> {\"name\": \"double\",\"type\": \"double\",\"default\" : 2 }
> ]}",
> We have a substantial body of similar schema in use but have not attempted
> to use C++ to resolve them before - and now this is failing.
>
>
>
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