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https://issues.apache.org/jira/browse/ORC-192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018795#comment-16018795
]
ASF GitHub Bot commented on ORC-192:
------------------------------------
Github user majetideepak commented on a diff in the pull request:
https://github.com/apache/orc/pull/122#discussion_r117631322
--- Diff: c++/src/Compression.cc ---
@@ -636,6 +884,33 @@ DIAGNOSTIC_POP
return static_cast<uint64_t>(result);
}
+ std::unique_ptr<BufferedOutputStream>
+ createCompressor(
+ CompressionKind kind,
+ OutputStream * outStream,
+ CompressionStrategy strategy,
+ uint64_t bufferCapacity,
+ uint64_t blockSize,
+ MemoryPool& pool) {
+ switch (static_cast<int64_t>(kind)) {
+ case CompressionKind_NONE: {
+ return std::unique_ptr<BufferedOutputStream>
+ (new BufferedOutputStream(pool, outStream, bufferCapacity,
blockSize));
+ }
+ case CompressionKind_ZLIB: {
+ int level = (strategy == CompressionStrategy_SPEED) ? -1 : 9;
--- End diff --
You can see the compression levels here
http://www.zlib.net/manual.html
```
#define Z_NO_COMPRESSION 0
#define Z_BEST_SPEED 1
#define Z_BEST_COMPRESSION 9
#define Z_DEFAULT_COMPRESSION (-1)
```
> Zlib compression stream
> -----------------------
>
> Key: ORC-192
> URL: https://issues.apache.org/jira/browse/ORC-192
> Project: ORC
> Issue Type: Sub-task
> Components: C++
> Reporter: Xiening Dai
> Assignee: Xiening Dai
>
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