Bin Guo created AVRO-1350:
-----------------------------
Summary: Error in decoding enums using ResolvingDecoder
Key: AVRO-1350
URL: https://issues.apache.org/jira/browse/AVRO-1350
Project: Avro
Issue Type: Bug
Components: c++
Affects Versions: 1.7.4
Reporter: Bin Guo
We can't get a correct result when decoding enums using resolving decoder.
e.g.
{code:title=An enum example}
{"type":"enum","name":"Mode","symbols":["MEMORY","DISK"]}
{code}
We encoded "DISK"(1), then decoded with resolving decoder, got "MEMORY"(0).
I examined the code and found that there is a sort after reading names of
reader.
I could't quite understand the author's intention, but it really can not work
well.
{code:title=Symbol.cc}
Symbol Symbol::enumAdjustSymbol(const NodePtr& writer, const NodePtr& reader)
{
vector<string> rs;
size_t rc = reader->names();
for (size_t i = 0; i < rc; ++i) {
rs.push_back(reader->nameAt(i));
}
sort(rs.begin(), rs.end()); // the strange sort
{code}
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