Examples with UserMetadataItem org.apache.orc.OrcProto.UserMetadataItem used on opensource projects

Example 1 with UserMetadataItem

use of org.apache.orc.OrcProto.UserMetadataItem in project hudi by apache.

the class OrcUtils method readFooter.

@Override
public Map<String, String> readFooter(Configuration conf, boolean required, Path orcFilePath, String... footerNames) {
    try (Reader reader = OrcFile.createReader(orcFilePath, OrcFile.readerOptions(conf))) {
        Map<String, String> footerVals = new HashMap<>();
        List<UserMetadataItem> metadataItemList = reader.getFileTail().getFooter().getMetadataList();
        Map<String, String> metadata = metadataItemList.stream().collect(Collectors.toMap(UserMetadataItem::getName, metadataItem -> metadataItem.getValue().toStringUtf8()));
        for (String footerName : footerNames) {
            if (metadata.containsKey(footerName)) {
                footerVals.put(footerName, metadata.get(footerName));
            } else if (required) {
                throw new MetadataNotFoundException("Could not find index in ORC footer. Looked for key " + footerName + " in " + orcFilePath);
            }
        }
        return footerVals;
    } catch (IOException io) {
        throw new HoodieIOException("Unable to read footer for ORC file:" + orcFilePath, io);
    }
}