[jira] [Created] (NIFI-6964) Use compression level for xz-lzma2 format of the CompressContent processor

["John Pierce (Jira)" <ji...@apache.org>]

John Pierce created NIFI-6964:
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             Summary: Use compression level for xz-lzma2 format of the CompressContent processor
                 Key: NIFI-6964
                 URL: https://issues.apache.org/jira/browse/NIFI-6964
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
    Affects Versions: 1.10.0
            Reporter: John Pierce
         Attachments: CompressContent-enable-xz-compression-levels.patch

The CompressContent processor does not use the Compression Level property of the processor except for when using the GZIP compression format. On the contrary, the xz-lzma2 compression format defaults to using XZ compression level 6 for that specific format (I read the CompressContent.java source code to verify this) – disregarding whatever compression level you set on the processor itself.

I have a use case where I must use the xz-lzma2 format (don't ask why) and I have to send (using the XZ format) already highly-compressed content that is +*NOT*+ XZ format to begin with. I have in excess of 500 GB of this sort of already highly compressed content to further compress into the XZ format on a daily basis.

The attached patch will enhance the CompressContent.java source code enabling the compression level property to be used in both the GZIP and the XZ-LZMA2 formats.

Please consider adding this patch to the baseline for this processor. I've tested it and the results are fantastic because I can crank down the compression level to 0 for XZ-LZMA2 now and use a lot less CPU. I'm generally seeing a 66% improvement in elapsed time to process highly compressed content using XZ format with compression level of 0 versus the hard-coded level 6 of the baseline code.

 



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