Tongjie Chen created HIVE-6914:
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Summary: parquet-hive cannot write nested map (map value is map)
Key: HIVE-6914
URL: https://issues.apache.org/jira/browse/HIVE-6914
Project: Hive
Issue Type: Bug
Components: File Formats
Affects Versions: 0.13.0
Reporter: Tongjie Chen
// table schema (identical for both plain text version and parquet version)
desc hive> desc text_mmap;
m map>
// sample nested map entry
{"level1":{"level2_key1":"value1","level2_key2":"value2"}}
The following query will fail,
insert overwrite table parquet_mmap select * from text_mmap;
Caused by: parquet.io.ParquetEncodingException: This should be an ArrayWritable
or MapWritable:
org.apache.hadoop.hive.ql.io.parquet.writable.BinaryWritable@f2f8106
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeData(DataWritableWriter.java:85)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeArray(DataWritableWriter.java:118)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeData(DataWritableWriter.java:80)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeData(DataWritableWriter.java:82)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.write(DataWritableWriter.java:55)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriteSupport.write(DataWritableWriteSupport.java:59)
at
org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriteSupport.write(DataWritableWriteSupport.java:31)
at
parquet.hadoop.InternalParquetRecordWriter.write(InternalParquetRecordWriter.java:115)
at parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:81)
at parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:37)
at
org.apache.hadoop.hive.ql.io.parquet.write.ParquetRecordWriterWrapper.write(ParquetRecordWriterWrapper.java:77)
at
org.apache.hadoop.hive.ql.io.parquet.write.ParquetRecordWriterWrapper.write(ParquetRecordWriterWrapper.java:90)
at
org.apache.hadoop.hive.ql.exec.FileSinkOperator.processOp(FileSinkOperator.java:622)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:793)
at
org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:87)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:793)
at
org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:92)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:793)
at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:540)
... 9 more
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