diff options
| author | chrislu <chris.lu@gmail.com> | 2022-02-27 03:57:24 -0800 |
|---|---|---|
| committer | chrislu <chris.lu@gmail.com> | 2022-02-27 03:57:24 -0800 |
| commit | 941ced60a46a447b98918ff488946a201b0e05b9 (patch) | |
| tree | 38836175cfeb41c975007834b7ec270fbe9678ff | |
| parent | f9d9eed0c9458db0ea3bdd707747e06570e3eabf (diff) | |
| download | seaweedfs-941ced60a46a447b98918ff488946a201b0e05b9.tar.xz seaweedfs-941ced60a46a447b98918ff488946a201b0e05b9.zip | |
download 2 chunks if at the beginning of a file
| -rw-r--r-- | weed/filer/reader_at.go | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/weed/filer/reader_at.go b/weed/filer/reader_at.go index 8ee627a21..18015e0b3 100644 --- a/weed/filer/reader_at.go +++ b/weed/filer/reader_at.go @@ -168,10 +168,16 @@ func (c *ChunkReadAt) readChunkSliceAt(buffer []byte, chunkView *ChunkView, next } n, err = c.readerCache.ReadChunkAt(buffer, chunkView.FileId, chunkView.CipherKey, chunkView.IsGzipped, int64(offset), int(chunkView.ChunkSize), chunkView.LogicOffset == 0) - if c.lastChunkFid != "" && c.lastChunkFid != chunkView.FileId { + if c.lastChunkFid != chunkView.FileId { if chunkView.Offset == 0 { // start of a new chunk - c.readerCache.UnCache(c.lastChunkFid) - c.readerCache.MaybeCache(nextChunkViews) + if c.lastChunkFid != "" { + c.readerCache.UnCache(c.lastChunkFid) + c.readerCache.MaybeCache(nextChunkViews) + } else { + if len(nextChunkViews) >= 1 { + c.readerCache.MaybeCache(nextChunkViews[:1]) // just read the next chunk if at the very beginning + } + } } } c.lastChunkFid = chunkView.FileId |