is that possible to write Parquet file using outputstream? - parquet

I have outputstream and i want to create parquet file using this outputstream is that possible to do that?

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Using Parquet Writer is it possible to write data into parquet with bucketing?

I am writing data into parquet files programatically with AvroParquetWriter but i also want to write parquet file with bucketing, is it possible to do same with bucketing ?
Thanks in advance!!

How to Read Parquet Records From InputStream

I have a file encrypted parquet data and it is read as an Inputstream. I want to extract individual parquet records from this Inputstream.Is there any way to do this? In avro it is possible with DatumReader.I am not supposed to write my data on disk in between.

Download tmp File
ParquetReader<Group> reader = ParquetReader.builder(new GroupReadSupport(),new Path(file.getAbsolutePath()))
.withConf(conf)
.build();

Spark: Saving RDD in an already existing path in HDFS

I am able to save the RDD output to HDFS with saveAsTextFile method. This method throws an exception if the file path already exists.
I have a use case where I need to save the RDDS in an already existing file path in HDFS. Is there a way to do just append the new RDD data to the data that is already existing in the same path?

One possible solution, available since Spark 1.6, is to use DataFrames with text format and append mode:
val outputPath: String = ???
rdd.map(_.toString).toDF.write.mode("append").text(outputPath)

How to overwrite the output directory in Hadoop?

I'm reading a json file and I wish to modify some changes in the json file. After modification I would like to overwrite in the same json file. When I'm doing that, MapReduce throws an exception as "FileAlreadyExists". Please give me a solution to overwrite in the same file. I'm not interested to delete the file and create a new file. I just wants to overwrite.

HDFS does not allow writes in the existing files. You have to delete the files first and re-write them. The in-place update to file is not supported in HDFS. The HDFS was design to provide high read on the existing data. So the feature you are expecting is not available in HDFS.

Using ParquetFileWriter to write data into parquet file?

I am newBee to parquet!
I have tried below Example code to write data into parquet file using parquetWriter .
http://php.sabscape.com/blog/?p=623
The above example uses parquetWriter, But I want to use ParquetFileWriter to write data efficiently in parquet files.
Please suggest an example or how we can write parquet files using ParquetFileWriter ?

You can probably get some idea from a parquet column reader that i wrote here.

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