![]() ![]() White space in column name is not supported for Parquet files. ![]() Note currently Copy activity doesn't support LZO when read/write Parquet files. Supported types are " none", " gzip", " snappy" (default), and " lzo". When reading from Parquet files, Data Factories automatically determine the compression codec based on the file metadata. Deflate is relevant only for the Avro file format. DEFLATE Compression algorithm based on LZSS and Huffman coding. Athena supports the following compression formats: BZIP2 Format that uses the Burrows-Wheeler algorithm. The compression codec to use when writing to Parquet files. The same principle applies for ORC, text file, and JSON storage formats. See details in connector article -> Dataset properties section. Each file-based connector has its own location type and supported properties under location. The type property of the dataset must be set to Parquet. Asking for help, clarification, or responding to other answers. This section provides a list of properties supported by the Parquet dataset. Thanks for contributing an answer to Stack Overflow Please be sure to answer the question.Provide details and share your research But avoid. Dataset propertiesįor a full list of sections and properties available for defining datasets, see the Datasets article. By default, the service uses min 64 MB and max 1G. This means that JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory. ![]() The flag Xms specifies the initial memory allocation pool for a Java Virtual Machine (JVM), while Xmx specifies the maximum memory allocation pool. If you copy data to/from Parquet format using Self-hosted Integration Runtime and hit error saying "An error occurred when invoking java, message: :Java heap space", you can add an environment variable _JAVA_OPTIONS in the machine that hosts the Self-hosted IR to adjust the min/max heap size for JVM to empower such copy, then rerun the pipeline.Įxample: set variable _JAVA_OPTIONS with value -Xms256m -Xmx16g. ![]()
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