Predicate projection not working in parquet - parquet

Question

First of all I am new to this forum and I am a novice in parquet and trying to understand the nitty gritty of it. Have written a java Map Reduce code to validate the predicate & column projection. Here is the challenge that I face which I need help from you experts.
Predicate Projection code:
public static class PushDown implements UnboundRecordFilter {
private final UnboundRecordFilter filter;
public PushDown()
{
filter = ColumnRecordFilter.column("Age",ColumnPredicates.equalTo(35));
}
#Override
public RecordFilter bind(Iterable<ColumnReader> readers) {
return filter.bind(readers);
}
}
Invoking the predicate projection:
AvroParquetInputFormat.setUnboundRecordFilter(job, PushDown.class);
Got Below Error:
Error: parquet.io.ParquetDecodingException: Can not read value at 1 in block 0 in file hdfs://quickstart.cloudera:8020/parq/customer/wocomp/part-m-00000.parquet
at parquet.hadoop.InternalParquetRecordReader.nextKeyValue(InternalParquetRecordReader.java:241)
at parquet.hadoop.ParquetRecordReader.nextKeyValue(ParquetRecordReader.java:227)
at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.nextKeyValue(MapTask.java:556)
at org.apache.hadoop.mapreduce.task.MapContextImpl.nextKeyValue(MapContextImpl.java:80)
at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.nextKeyValue(WrappedMapper.java:91)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: java.lang.UnsupportedOperationException
at parquet.column.impl.ColumnReaderImpl$Binding.getBinary(ColumnReaderImpl.java:118)
at parquet.column.impl.ColumnReaderImpl.getBinary(ColumnReaderImpl.java:417)
at parquet.filter.ColumnPredicates$1.apply(ColumnPredicates.java:67)
at parquet.filter.ColumnRecordFilter.isMatch(ColumnRecordFilter.java:72)
at parquet.io.FilteredRecordReader.skipToMatch(FilteredRecordReader.java:80)
at parquet.io.FilteredRecordReader.read(FilteredRecordReader.java:60)
at parquet.hadoop.InternalParquetRecordReader.nextKeyValue(InternalParquetRecordReader.java:216)
... 12 more
Additional Info:
I am able to validate the Column Projection using below code and I could see Results like this. which was like this without column projection
Schema projection = Schema.createRecord("AvgAge", "", "", false);
List<Schema.Field> fields = new ArrayList<Schema.Field>();
fields.add(new Schema.Field("Age", Schema.create(Schema.Type.LONG), "",""));
projection.setFields(fields);
AvroParquetInputFormat.setRequestedProjection(job, projection);
Questions:
Q1. In above code, what needs to be corrected for filter push down to work?
Q2. I don't see much info in logs to validate projection. Could you help how we should be validating the filter/column projection?
Appreciate your time looking this and trying to help out. Thank you.