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https://issues.apache.org/jira/browse/ORC-175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119622#comment-16119622
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Gopal V commented on ORC-175:
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igzip is not testing the same codepath as ORC, because ORC does use a mix of
LZ77 widths and tries to use faster decode loops, at lower compression levels
(it uses different zlib combinations for different column types).
https://github.com/apache/orc/blob/master/java/core/src/java/org/apache/orc/impl/ZlibCodec.java#L138
Does ISA-L offer any meaningful speedups for those combinations of
Zlib-compatible algorithms?
> ZLIB performance
> ----------------
>
> Key: ORC-175
> URL: https://issues.apache.org/jira/browse/ORC-175
> Project: ORC
> Issue Type: Improvement
> Components: Java
> Reporter: iamhumanbeing
> Assignee: iamhumanbeing
> Labels: performance
> Original Estimate: 336h
> Remaining Estimate: 336h
>
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