emkornfield commented on code in PR #995:
URL: https://github.com/apache/parquet-mr/pull/995#discussion_r990726272
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parquet-protobuf/src/main/java/org/apache/parquet/proto/ProtoWriteSupport.java:
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@@ -559,7 +564,14 @@ final void writeRawValue(Object value) {
class BinaryWriter extends FieldWriter {
@Override
final void writeRawValue(Object value) {
- ByteString byteString = (ByteString) value;
+ // Non-ByteString values can happen when recursions gets truncated.
+ ByteString byteString = value instanceof ByteString
+ ? (ByteString) value
+ // TODO: figure out a way to use MessageOrBuilder
+ : value instanceof Message
+ ? ((Message) value).toByteString()
+ // Worst-case, just dump as plain java string.
+ : ByteString.copyFromUtf8(value.toString());
Review Comment:
is this actually an intended state? If not it is probably better to raise
an exception then writing data that could possibly be hard to recover.
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