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https://issues.apache.org/jira/browse/PARQUET-851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vihang Karajgaonkar updated PARQUET-851:
----------------------------------------
Description:
I wrote a simple testCase to test the fromJSON method below and it fails
because ParquetMetadata does not implement default constructors.
{noformat}
@Test public void testFromJSON() {
MessageType schema = parseMessageType("message test { optional binary
some_null_field; }");
parquet.hadoop.metadata.FileMetaData fileMetaData =
new parquet.hadoop.metadata.FileMetaData(schema, new HashMap<String,
String>(), null);
List<BlockMetaData> blockMetaDataList = new ArrayList<BlockMetaData>();
BlockMetaData blockMetaData = new BlockMetaData();
blockMetaData.addColumn(createColumnChunkMetaData());
blockMetaDataList.add(blockMetaData);
ParquetMetadata metadata = new ParquetMetadata(fileMetaData,
blockMetaDataList);
String metadataStr = ParquetMetadata.toJSON(metadata);
System.out.println(ParquetMetadata.toPrettyJSON(metadata));
ParquetMetadata m2 = ParquetMetadata.fromJSON(metadataStr);
}
{noformat}
was:
I wrote a simple testCase to test the fromJSON method below and it fails
because ParquetMetadata does not implement default constructors.
{noformat}
@Test public void testFromJSON() {
ParquetMetadata metadata = getDummyParquetMetadata();
String metadataStr = ParquetMetadata.toJSON(metadata);
System.out.println(ParquetMetadata.toPrettyJSON(metadata));
ParquetMetadata m2 = ParquetMetadata.fromJSON(metadataStr);
}
{noformat}
> ParquetMetadata.fromJSON method doesn't work
> --------------------------------------------
>
> Key: PARQUET-851
> URL: https://issues.apache.org/jira/browse/PARQUET-851
> Project: Parquet
> Issue Type: Bug
> Components: parquet-mr
> Reporter: Vihang Karajgaonkar
>
> I wrote a simple testCase to test the fromJSON method below and it fails
> because ParquetMetadata does not implement default constructors.
> {noformat}
> @Test public void testFromJSON() {
> MessageType schema = parseMessageType("message test { optional binary
> some_null_field; }");
> parquet.hadoop.metadata.FileMetaData fileMetaData =
> new parquet.hadoop.metadata.FileMetaData(schema, new HashMap<String,
> String>(), null);
> List<BlockMetaData> blockMetaDataList = new ArrayList<BlockMetaData>();
> BlockMetaData blockMetaData = new BlockMetaData();
> blockMetaData.addColumn(createColumnChunkMetaData());
> blockMetaDataList.add(blockMetaData);
> ParquetMetadata metadata = new ParquetMetadata(fileMetaData,
> blockMetaDataList);
> String metadataStr = ParquetMetadata.toJSON(metadata);
> System.out.println(ParquetMetadata.toPrettyJSON(metadata));
> ParquetMetadata m2 = ParquetMetadata.fromJSON(metadataStr);
> }
> {noformat}
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