ban compression

Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>

Author: Little-Wallace

src/log_batch.rs

@@ -591,12 +591,7 @@ where
             item.encode_to::<W>(&mut vec).unwrap();
         }
 
-        let compression_type = if vec.len() > COMPRESSION_SIZE {
-            vec = lz4::encode_block(&vec[HEADER_LEN..], HEADER_LEN, 4);
-            CompressionType::Lz4
-        } else {
-            CompressionType::None
-        };
+        let compression_type = CompressionType::None;
 
         let checksum = crc32(&vec[8..]);
         vec.encode_u32_le(checksum).unwrap();