Ext3h commented on code in PR #48192:
URL: https://github.com/apache/arrow/pull/48192#discussion_r2558834530
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cpp/src/arrow/util/compression_zstd.cc:
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@@ -207,8 +226,18 @@ class ZSTDCodec : public Codec {
Result<int64_t> Compress(int64_t input_len, const uint8_t* input,
int64_t output_buffer_len, uint8_t* output_buffer)
override {
- size_t ret = ZSTD_compress(output_buffer,
static_cast<size_t>(output_buffer_len),
- input, static_cast<size_t>(input_len),
compression_level_);
+ if (!compression_context_) {
Review Comment:
`thread_local` it is, no other sensible options. And not going to touch
Brotli - that one does not support context reuse at all.
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