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Compression Algorithms

Info

NOTE: Import of a compressed file whose underlying format is binary, such as Excel or PDF, is not supported.


Info

NOTE: Importing a compressed file with a high compression ratio can overload the available memory for the application. In such cases, you can decompress the file before uploading.

If decompression fails, you should contact your administrator about increasing the Java Heap Size memory.

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Info

NOTE: GZIP files on Hadoop are not split across multiple nodes. As a result, jobs can crash when processing it through a single Hadoop task. This is a known issue with GZIP on Hadoop.

Where possible, limit the size of your GZIP files to 100 MB of less, or use BZIP2 as an alternative compression method. As a workaround, you can try to run the job on the unzipped file. You may also disable profiling for the job. See Run Job Page.



Read Native File Formats

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GZIPBZIPSnappy
CSV SupportedSupportedSupported
JSONSupportedSupportedSupported
Avro  

Supported
Hive  

Supported




Write Native File Formats

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GZIPBZIPSnappy
CSVSupportedSupportedSupported
JSONSupportedSupportedSupported
Avro  

Supported; always on
Hive  

Supported; always on




Additional Configuration for File Format Support

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