Upgrade to ZSTD 0.4.2

Summary: Change to call the new compression function.

Test Plan: build and run db_bench with the compression to make sure it compresses.

Reviewers: anthony, rven, kradhakrishnan, IslamAbdelRahman, igor, yhchiang

Reviewed By: yhchiang

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D51603

1 files changed, 1 insertions, 1 deletions

diff --git a/util/compression.h b/util/compression.h
index dd4d0135f..954c43dbe 100644
--- a/util/compression.h
+++ b/util/compression.h
@@ -620,7 +620,7 @@ inline bool ZSTD_Compress(const CompressionOptions& opts, const char* input,
   size_t compressBound = ZSTD_compressBound(length);
   output->resize(static_cast<size_t>(output_header_len + compressBound));
   size_t outlen = ZSTD_compress(&(*output)[output_header_len], compressBound,
-                                input, length);
+                                input, length, 1 /* level */);
   if (outlen == 0) {
     return false;
   }