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https://issues.apache.org/jira/browse/PIG-3323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661019#comment-13661019
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Viraj Bhat commented on PIG-3323:
---------------------------------
Spoke to Egil offline:
His original comments were:
1) Should default value be written to a file?
Ans) It should be if it is specified for a valid Complex Types.
2) Should Default schema specification be written to the file's metadata?
Ans) It should be if it is valid for that Complex Type. Since Union does not
support default it was not written out. But we need to see how the default
schema's work for other data types.
Viraj
> AVRO: default value not stored in file when given as paramter to AvroStorage
> ----------------------------------------------------------------------------
>
> Key: PIG-3323
> URL: https://issues.apache.org/jira/browse/PIG-3323
> Project: Pig
> Issue Type: Bug
> Components: piggybank
> Affects Versions: 0.11.2
> Reporter: Egil Sorensen
> Assignee: Viraj Bhat
> Labels: patch
> Fix For: 0.12, 0.11.2
>
>
> A pig script like the below succeeds, but inspecting the resulting file I
> find that the schema is stripped of the default value specification.
> {code}
> a = load ':INPATH:/types/numbers.txt' using PigStorage(':') as (intnum1000:
> int,id: int,intnum5: int,intnum100: int,intnum: int,longnum: long,floatnum:
> float,doublenum: double);
> b2 = foreach a generate id, intnum5, intnum100;
> c2 = filter b2 by 110 <= id and id < 120;
> describe c2;
> dump c2;
> store c2 into ':OUTPATH:.intermediate_2' USING
> org.apache.pig.piggybank.storage.avro.AvroStorage('
> {
> "debug" : 5,
> "schema" : {
> "name" : "schema_2",
> "type" : "record",
> "fields" : [
> {
> "name" : "id",
> "type" : [
> "null",
> "int"
> ]
> },
> {
> "name" : "intnum5",
> "type" : [
> "null",
> "int"
> ]
> },
> {
> "name" : "intnum100",
> "type" : [
> "null",
> "int"
> ],
> "default" : 0
> }
> ]
> }
> }
> ');
> {code}
> BTW, the documentation on https://cwiki.apache.org/PIG/avrostorage.html is
> mute on the subject of defaults, so first question is: is my expectation that
> the default is to be written to file not correct?
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